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UK investigates 'network' of alleged Manchester attackers

Associated Press logo Associated Press 5/24/2017 By JILL LAWLESS, MAGGIE MICHAEL and GREGORY KATZ, Associated Press
A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland)

MANCHESTER, England (AP) — British security forces raided a building Wednesday in central Manchester as they investigated "a network" of people allegedly behind the city's concert bombing. Hundreds of soldiers were sent to secure key sites across the country, including Buckingham Palace and the British Parliament at Westminster.

Mounted police on patrol in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira) © The Associated Press Mounted police on patrol in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira)

Home Secretary Amber Rudd said the bomber, Salman Abedi, "likely" did not act alone when he killed 22 people and wounded nearly 120 at an Ariana Grande concert Monday night in Manchester. She said he had been known to security forces "up to a point." Abedi, a 22-year-old British citizen born to Libyan parents, died in the attack.

The English flag of St. George flies at half mast above Manchester Cathedral in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson) © The Associated Press The English flag of St. George flies at half mast above Manchester Cathedral in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson)

"I think it's very clear this is a network we are investigating," Manchester Police chief constable Ian Hopkins said, confirming that an off-duty police officer was among those killed in the attack.

A woman stands next to flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24 2017. (AP Photo/Emilio Morenatti) © The Associated Press A woman stands next to flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24 2017. (AP Photo/Emilio Morenatti)

Many at the concert were young girls and teens enthralled by Grande's pop power — and those who died included an 8-year-old girl.

In this photo taken on Tuesday, May 23, 2017 the lights are off at the ancient Colosseum in Rome. Rome turned off the lights of the Colosseum, Trevi Fountain and city Hall Palace to honor the victims of the Manchester bomb attack. (Angelo CarconiANSA via AP) © The Associated Press In this photo taken on Tuesday, May 23, 2017 the lights are off at the ancient Colosseum in Rome. Rome turned off the lights of the Colosseum, Trevi Fountain and city Hall Palace to honor the victims of the Manchester bomb attack. (Angelo CarconiANSA via AP)

Officials are examining Abedi's trips to Libya as they piece together his allegiances and try to foil any new potential threats. The government said nearly 1,000 soldiers were deployed instead of police Wednesday in high-profile sites in London and elsewhere.

In this photo taken on Tuesday, May 23, 2017 the lights are off at the ancient Colosseum in Rome. Rome turned off the lights of the Colosseum, Trevi Fountain and city Hall Palace to honor the victims of the Manchester bomb attack. (Angelo CarconiANSA via AP) © The Associated Press In this photo taken on Tuesday, May 23, 2017 the lights are off at the ancient Colosseum in Rome. Rome turned off the lights of the Colosseum, Trevi Fountain and city Hall Palace to honor the victims of the Manchester bomb attack. (Angelo CarconiANSA via AP)

Britain raised its threat level from terrorism to "critical" late Tuesday amid concerns that Abedi may have accomplices who are planning another attack. Abedi grew up in Manchester's southern suburbs and once attended Salford University there.

A woman stands by flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti) © The Associated Press A woman stands by flowers offered for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti)

Police said three suspects were arrested Wednesday around Manchester, and Abedi's father told The Associated Press that Abedi's brother Ismail was arrested Tuesday in the area.

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A woman places flowers at a memorial for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti) © The Associated Press A woman places flowers at a memorial for the victims of a suicide attack at a concert by Ariana Grande that killed more than 20 people Monday night in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti)

Heavily armed police raided an apartment building in Manchester on Wednesday afternoon, blasting the door open with a controlled explosion. The building, Granby House, is popular with students and young professionals. Neighbor Adam Prince said raided flat had been used as an Airbnb.

Newspapers reporting about the suicide attack at a concert by Ariana Grande that killed more than 20 people as it ended Monday night are placed in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti) © The Associated Press Newspapers reporting about the suicide attack at a concert by Ariana Grande that killed more than 20 people as it ended Monday night are placed in central Manchester, Britain, Wednesday, May 24, 2017. (AP Photo/Emilio Morenatti)

Muye Li, a 23-year-old student who lives on the same floor as the raided apartment, said he thought officers were looking for a woman because they "asked me if I had seen the lady next door."

Armed police keep guard near Victoria Station in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth) © The Associated Press Armed police keep guard near Victoria Station in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth)

Across London, troops fanned out and authorities reconsidered security plans.

People have their bags searched outside St Paul's Cathedral in London, Wednesday May 24, 2017 ahead of a service to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press People have their bags searched outside St Paul's Cathedral in London, Wednesday May 24, 2017 ahead of a service to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland)

The changing of the guard ceremony at Buckingham Palace was canceled Wednesday so police officers can be re-deployed, Britain's defense ministry said. The traditional ceremony is a major tourist attraction in London.

Armed police officers patrol outside at St Paul's Cathedral in London, Wednesday May 24, 2017 to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press Armed police officers patrol outside at St Paul's Cathedral in London, Wednesday May 24, 2017 to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland)

The Palace of Westminster, which houses the British Parliament in London, was also closed Wednesday to all those without passes, and tours and events there were cancelled until further notice. Armed police also patrolled outside St. Paul's Cathedral in London, another popular tourist spot.

People have their bags searched outside St Paul's Cathedral in London, Wednesday May 24, 2017 ahead of a service to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press People have their bags searched outside St Paul's Cathedral in London, Wednesday May 24, 2017 ahead of a service to mark the one hundredth anniversary of the Order of the British Empire. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Tim Ireland)

"(The goal) is to make our city as hostile an environment as possible for terrorists to plan and operate," said London Police Commander Jane Connors.

Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

The Chelsea soccer team also announced it would cancel Sunday's victory parade in London that was to have celebrated the team's Premier League title win.

A forensic officer works near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press A forensic officer works near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

"We are sure our fans will understand this decision," the team said, adding that the parade would have diverted police from the bombing investigation.

Tributes are seen outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson) © The Associated Press Tributes are seen outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson)

Speaking Wednesday from the Libyan city of Tripoli, the father of the alleged Manchester attacker denied that his son was linked to militants or to the deadly bombing. Ramadan Abedi told the AP that when he spoke to his son Abedi five days ago, he sounded "normal."

A police officer accepts tributes from a man outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson) © The Associated Press A police officer accepts tributes from a man outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson)

He said Salman was getting ready to visit Saudi Arabia for a short Umrah pilgrimage, then planned to head to Libya to spend the Islamic holy month of Ramadan with his family.

Tributes are seen outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson) © The Associated Press Tributes are seen outside the Manchester Arena in Manchester, England, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Dave Thompson)

"We don't believe in killing innocents. This is not us," the elder Abedi told the AP by telephone.

Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth) © The Associated Press Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth)

He said his son last visited Libya a month-and-a-half ago.

Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

The senior Abedi fled Tripoli in 1993 after Moammar Gadhafi's security authorities issued an arrest warrant for him and eventually sought political asylum in Britain. Now he is a manager for the Central Security force in Tripoli.

Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

Former Libyan security official Abdel-Basit Haroun told the AP that the elder Abedi was a member of the Libyan Islamic Fighting group in the 1990s, which had links to al-Qaida.

Members of the public look at flower tributes in Albert square in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira) © The Associated Press Members of the public look at flower tributes in Albert square in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira)

Although the LIFG disbanded, Haroun says the father belongs to the Salafi Jihadi movement, the most extreme sect of Salafism and from which al-Qaida and the Islamic State group both hail.

Mounted police on patrol in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira) © The Associated Press Mounted police on patrol in central Manchester, England Wednesday May 24, 2017. More than 20 people were killed and dozens injured in an explosion following a Ariana Grande concert at the venue late Monday evening. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point. (AP Photo/Rui Vieira)

Early Wednesday, Manchester police arrested a man at a house just a 10-minute walk from Abedi's home.

Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Forensic officers work near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

Omar Alfa Khuri, who lives across the street, said he was awakened at 2:30 a.m. by a loud noise and saw police take away the father of the family that lives there in handcuffs. He said the man, in his 40s, is named Adel and has a wife and several children.

Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

"They arrested the father, and I think the rest of the family kind of disappeared," Khuri said, adding that he knew the man from the neighborhood and the mosque. "In the last 15 years, I haven't seen him in trouble at all. I haven't seen police come to his house."

Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth) © The Associated Press Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber.(AP Photo/Kirsty Wigglesworth)

British Prime Minister Theresa May chaired a meeting Wednesday of her emergency security cabinet group to talk about intelligence reports on Abedi and concerns he might have had outside support. Officials are probing how often Abedi had traveled to Libya.

Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth) © The Associated Press Armed police officers patrol a police cordon near the Manchester Arena in Manchester, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed 22, as new details emerged about the bomber. (AP Photo/Kirsty Wigglesworth)

France's interior minister said Abedi is believed to have also traveled to Syria and had "proven" links with the Islamic State group.

A police presence continues in connection to the Monday night explosion at the Manchester Arena at an address in Aston Avenue Greater Manchester England, Wednesday May 24, 2017 . A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday . ( Joe Giddens/PA via AP) © The Associated Press A police presence continues in connection to the Monday night explosion at the Manchester Arena at an address in Aston Avenue Greater Manchester England, Wednesday May 24, 2017 . A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday . ( Joe Giddens/PA via AP)

Rudd said Britain's increased official threat level will remain at "critical" as the investigation proceeds and won't be lowered until security services are convinced there is no active plot in place.

Undated handout photo from an unnamed source made available on Wednesday May 24, 2017 of Salman Abedi. British authorities identified Salman Abedi as the bomber who was responsible for Monday's explosion in Manchester which killed more than 20 people. (AP) © The Associated Press Undated handout photo from an unnamed source made available on Wednesday May 24, 2017 of Salman Abedi. British authorities identified Salman Abedi as the bomber who was responsible for Monday's explosion in Manchester which killed more than 20 people. (AP)

She also complained about U.S. officials leaking sensitive information about Abedi to the press, saying that could take "the element of surprise" away from Britain's security services and police.

A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland)

"I have been very clear with our friends that that should not happen again," she said.

A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland)

In addition to those killed in the concert bombing, Manchester officials raised to 119 the number of people who sought medical treatment after the attack, 20 of them with critical injuries.

A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland)

Sixty-four people are still hospitalized, said Jon Rouse of the Greater Manchester Health and Social Care Partnership, many with serious wounds that will require "very long term care and support."

A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland) © The Associated Press A member of the army joins police officers in Westminster, London, Wednesday, May 24, 2017. Britons will find armed troops at vital locations Wednesday after the official threat level was raised to its highest point following a suicide bombing that killed more than 20, as new details emerged about the bomber. (AP Photo/Tim Ireland)

Officials said all the dead and wounded had been identified. But Greater Manchester Police said it could not formally name the victims until forensic post-mortems were concluded, which will take four to five days. It said all the affected families have been contacted and are receiving support.

A general view of Victoria Railway Station and the Manchester Arena in Manchester, England, Wednesday, May 24, 2017, after the suicide attack at an Ariana Grande concert that left more than 20 people dead and many more injured, as it ended on Monday night at the Manchester Arena. (AP Photo/Dave Thompson) © The Associated Press A general view of Victoria Railway Station and the Manchester Arena in Manchester, England, Wednesday, May 24, 2017, after the suicide attack at an Ariana Grande concert that left more than 20 people dead and many more injured, as it ended on Monday night at the Manchester Arena. (AP Photo/Dave Thompson)

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Police from the Tactical Aid Unit prepre to enter Granby House apartments in Manchester England, Wednesday May 24, 2017 in connection to Monday's Manchester explosion. A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday night. (AP Photo/Louise Bolotin) © The Associated Press Police from the Tactical Aid Unit prepre to enter Granby House apartments in Manchester England, Wednesday May 24, 2017 in connection to Monday's Manchester explosion. A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday night. (AP Photo/Louise Bolotin)

Michael reported from Cairo and Katz reported from London. Sylvia Hui and Paisley Dodds in London, Rob Harris in Manchester and Angela Charlton in Paris contributed.

Police from the Tactical Aid Unit prepre to enter Granby House apartments in Manchester England, Wednesday May 24, 2017 in connection to Monday's Manchester explosion. A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday night. (AP Photo/Louise Bolotin)

Police from the Tactical Aid Unit prepre to enter Granby House apartments in Manchester England, Wednesday May 24, 2017 in connection to Monday's Manchester explosion. A suicide bomber killed more than 20 people leaving a Ariana Grande concert at the Manchester Arena on Monday night. (AP Photo/Louise Bolotin)
© The Associated Press
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