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Details of cyanide murder appeal revealed

AAP logoAAP 16/12/2016 Lauren Farrow

An Indonesian woman imprisoned for murdering her friend with a cyanide laced coffee in Jakarta has criticised evidence gathered in Australia as part of the appeal against her conviction.

Jessica Kumala Wongso, 28, was sentenced to 20 years in prison in October for murdering her friend Wayan Mirna Salihin with a cyanide-laced coffee at a Jakarta cafe on January 6.

The pair had studied together at Sydney's Billy Blue design college and the judges found that when Wongso returned to Jakarta at the end of 2015 she was jealous seeing her friend happily married.

Wongso, meanwhile, had split with her Australian boyfriend Patrick O'Connor and was due to face a Sydney court over charges of high-range drink driving as well as an AVO application made by Mr O'Connor.

But in appeal documents filed to court last week and obtained by AAP, Wongso's lawyers have taken direct aim at key pieces of evidence gathered in Australia.

The 28-year-old's legal team criticise a statement by her former boss, director of marketing and media at NSW Ambulance, Kristie Carter, that was read to the court as she was not required to give evidence in person.

The statement described Wongso as a woman with two personalities who had threatened Ms Carter.

Wongso's appeal argue this evidence was "very subjective" and "had nothing to do" with Mirna's death.

"It is just opinion ... Kristie (Carter) didn't know anything about Mirna," Wongos's lawyer Otto Hasibuan told AAP.

"(Ms Carter) was not there before the court ... we had no opportunity to challenge what she said."

The judges' finding that Wongso came to Indonesia to escape legal problems in Australia was also highly speculative, the appeal documents state.

"On whose testimony was such a fact (based)? If such a fact exists, it must be obtained from witness testimony from Australia."

Among the strongest of the appeal points, Mr Hasibuan said, is the lack of a complete autopsy performed on Mirna - making the judges' decision that she died due to cyanide poisoning speculative.

"The judges didn't have the qualifications to say what caused the death of the victim."

Mr Hasibuan feels they have a strong basis for an appeal but it was "difficult to say" whether they will be successful.

"(During her trial) Jessica was very very confident that she would be released ... it was very difficult for her to accept the judgement."

"But now (she knows) that sometimes it is difficult to predict in Indonesia."

Prosecutor Ardito Muwardi told AAP they were still formulating their response to the appeal so could not comment, simply stating: "We will counter it."

The appeal could be heard as early as January next year, Mr Hasibuan said.

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