The Royal Commission into Northern Territory youth justice has heard that Dylan Voller wasn't a violent boy before he was mistreated in detention.
Mr Voller is one of the teenage detainees whose abuse by guards at Darwin's Don Dale youth detention facility sparked the national inquiry.
Antoinette Carroll from the Australian Aboriginal Legal Aid Service is his former case manager and says the detention experience contributed to his subsequent violent offences.
She says Mr Voller was set up to fail by not being given the appropriate assistance as he came in and out of the system from the age of 11.
Carroll: "His care workers were somewhat helpless in dealing with his complex issues. The (Corrections) Department seemed somewhat unwilling to resource the appropriate therapeutic supports that were needed to guide him and to, hopefully, disengage him from at-risk behaviours. So, rather than being a very collaborative child-focused approach it became somewhat adversarial for each caseworker that came on board."
