Refugee advocates say no lessons have been learned, a year on from the death of Iranian asylum seeker Reza Berati.
The 23-year old was killed at the Australian-run detention centre on Manus Island in Papua New Guinea, following a riot involving local civilians.
Kon Karapanagiotidis is from the Melbourne-based Asylum Seeker Resource Centre.
Mr Karapanagiotidis says Mr Berati's death was a result of Australia's mandatory indefinite detention policies.
He's told Abby Dinham a year since that fatal incident, conditions have worsened at the centre.
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