The man accused of plotting an "IS-affiliated" terror attack on Sydney while he worked at UNSW is an "open-minded Muslim" who has been framed, his brother has said.
Kamer Nizamdeen, 25, was arrested in his office high above the university campus on Thursday and charged with making a document to prepare for terrorism that allegedly included high-profile targets such as Malcolm Turnbull, Julie Bishop and the Sydney Harbour Bridge.
It is understood that a co-worker stumbled across a notebook containing an alleged terrorism manifesto at the IT building he works in, and called the police who promptly arrested Mr Nizamdeen.
"He would have had absolutely no reason to engage in such disgusting, hateful crimes to a city which has been extremely opening to him for the past 6 years," he wrote in a post that was shared by a friend, Mithra De Alwis.
"He has been falsely accused and as justification of having no conclusive evidence their [the police's] motive is to prolong his stay under custody to simply save themselves."
Investigators from the Joint Counter Terrorism Team, who raided the Sri Lankan national's office and Zetland home, seized innocent items like his Xbox, Mr De Alwis said.
"When the media tells you that he travelled to Sri Lanka and 'other areas' please understand that 'other areas' are not Syria or any war torn region in the Middle East it is simply the United States Of America where he travelled to visit family," he wrote.
The claims of a set-up come as it has been revealed that the alleged terrorist is related to several high-ranking members of Sri Lanka's government.
On Monday, the ABC reported that Mr Nizamdeen is the nephew of Sri Lanka's Sports and Local Government Minister Faiszer Musthapha.
The post-graduate student is also the grandson of Jehan Kamer Cassim, the former chairman of Sri Lanka's Bank of Ceylon.
The Facebook post said that Mr Nizamdeen, who was formally refused bail at Waverley Local Court on Friday, had not been in contact with any of his family since the dramatic arrest.
"He has not been able to communicate with any one of us back home and and we are simply broken ... we won’t give up in fighting for his cause and exposing the truth."
Mr Nizamdeen has been in Australia since 2015 and has no criminal record.
The IT business analyst worked with NSW Police in 2016 to develop an app to help adapt to life in Australia, which was presented at Parliament House.
He was also selected as UNSW Hero of the Week last year, telling an interviewer that material things are unimportant to him.
"Success for me, being happy, doesn’t always have to be about money, it’s not about the high-ranking job. Success is if you’re comfortable with where you are," he said.
While police say the IT student "would affiliate with IS", he has not been charged with being a member of a terror group.
"At this stage it appears that this is an individual operating on his own. There is certainly some further investigation that is required but again it is a matter that is before the courts," NSW Joint Counter Terrorism Team commander acting superintendent Michael Sheehy said at a press conference on Friday.