THE death of a Perth prison inmate is being investigated by WA Police and the Department of Justice.
The 30-year-old man was on Wednesday found alone and unresponsive in his cell at Acacia Prison, which is privately run by Serco.
Efforts to revive him were unsuccessful.
Police are preparing a report for the coroner while the department conducts an internal review.
Corrective Services Commissioner Tony Hassall has offered his condolences to the man’s family.