The executive director of Australia's Refugee and Immigration Legal Centre says there must an investigation, with the powers of a commission of inquiry, into the violence at Canberra's asylum seeker detention camp in Papua New Guinea.
David Manne, who is a human rights lawyer, says the Cornal report into the violence that claimed the life of Reza Barati and injured dozens of others on Manus raises more questions than it answers.
He says it exonerates Australian government officials and service providers contracted to it, yet also finds some individuals employed by the service providers committed criminal offences in breach of their employment conditions.
But Mr Manne says there was no examination or explanation for how these conclusions were reached.
"What we need is to look at all the allegations, look at all these findings and others, look at the evidence and work out who was accountable, who is accountable under law and whether or not these arrangements are in any way capable of meeting the obligations that Australia has to asylum seekers and refugees."
Australia's Refugee and Immigration Legal Centre David Manne.