Australia should repatriate and investigate alleged crimes of Islamic state member found in Syria, experts say

Mustafa Hajj-Obeid speaks to the Guardian from his prison cell. The 41-year-old has been reported as missing for the past six years since the military defeat of IS. Photograph: The Guardian

The Australian government should repatriate, monitor and investigate any crimes committed by a member of Islamic State who was wounded in the extremist group’s final battle, according to multiple security and international law experts.

Last week, the Guardian revealed an Australian man whose fate was not publicly known was alive and in custody in a prison in north-eastern Syria, run by the Kurdish-led Syrian Democratic Forces (SDF).