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U.S. Cities Tighten Security After Deadly Brussels Attack

The Huffington Post logo The Huffington Post 22/03/2016 Nina Golgowski
ATHENA IMAGE © Sylvain Lefevre via Getty Images ATHENA IMAGE

The United States is on high alert after Tuesday morning's deadly terrorist attacks in Brussels, with security tightened in Washington D.C. and New York City.

Authorities in both cities say there are no known direct threats at this time but that there will be an increased law enforcement presence as a precautionary measure after explosions at a Brussels airport and train station killed at least 34 people.

In D.C., Metro Transit Police says they’re adding K9 sweeps and patrols through the subways.

The NYPD is also increasing its presence, with the Port Authority Police Department also stepping up security at all three major airports, an official said.

"Until we learn more, the department has deployed additional counterterrorism resources across the city including: the Counterterrorism Response Command, the Strategic Response Group, and Hercules Teams," the NYPD said in a statement. “These teams have been deployed to crowded areas and transit locations around the city out of an abundance of caution to provide police presence and public reassurance as we closely follow the developing situation oversees."

The Department of Homeland Security is "closely monitoring the unfolding events in Brussels and we remain in contact with our counterparts in the region," the agency said in an email to The Huffington Post. "DHS will not hesitate to adjust our security posture, as appropriate, to protect the American people."

Travel into the U.S. from Brussels has also been affected with all flights canceled at the Brussels international airport, where one of the explosions took place.

American Airlines canceled Tuesday's flight 751 from Brussels to Philadelphia. It is also offering refunds or flight changes to travelers with similar itineraries scheduled for Wednesday.

United Airlines also announced that all flights to and from the Brussels international airport have been suspended until further notice.

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