The lawyer for Dylan Voller, who was pictured as a 17-year-old hooded and strapped to a mechanical chair in the Northern Territory, says his client is "scared for his safety" and should be released immediately.
Mr Voller has been in and out of juvenile detention since he was 11 years old. Now 19, he is currently being held in an adult jail. Footage showed him, along with other teenage boys, being tear-gassed, shackled and beaten by guards at the Don Dale detention facility.
Mr Voller and the other boys are now for the incidents that occurred while they were in detention.
The investigation by the program has prompted Prime Minister Malcolm Turnbull to establish a Royal Commission into youth detention, with the cooperation of the Northern Territory government.
READ MORE

澳洲总理:对北领地拘留所虐待青少年事件展开皇家调查
Mr Voller’s lawyer, Peter O’Brien said his client is considering going into voluntary isolation because he's afraid for his life.
"He needs to be released, he's scared for his safety in there," Mr O'Brien told the ABC.
"The same people who have brutalised him in the Don Dale detention centre are now working as his guards in the adult prison in Darwin. How can he be [anything] other than frightened for his life?"
are also emerging. A former guard has told the ABC Mr Voller was put in a mechanical restraint chair on "at least three occasions", disputing claims by the Northern Territory Corrections Department that it had only been used once on a youth detainee.
Mr Voller last night released a letter via his lawyer thanking the Australian public for their support and apologising for his behavior.
"I would just like to thank the whole Australian community for the support you have showed for us [boys]," he wrote.
"I would also like to take this opportunity to apologise to the community for my wrongs and I can’t wait to get out and make up for them."