“It sounds like disgusting behaviour,” he said.
“I’m not against eating guinea pigs, I understand in some cultures they are considered a delicacy, but it is inappropriate for prison personnel on day release to take advantage of an opportunity at an animal refuge.”
The Premier said the matter was being investigated and the prison work programme had been suspended.
“So that’s a lost opportunity for those prisoners looking forward to a little bit of extra liberty as part of the day release programme,” he said.
“Obviously, those particular prisoners will be dealt with if there’s any rules or guidance that’s been contravened.”
NewsWire understands anything taken back to the prison after the work is complete without approval is considered contraband.
The carcasses were allegedly found in an industrial shed area outside the prison’s secure perimeter.
Corrective Services Commissioner Brad Royce said the allegations were disturbing.
“I have asked for an investigation into the actions of Section 95 prisoners and their supervision,” he said.
“It’s particularly concerning given the Section 95 community work programme is an integral part of the department’s rehabilitation and reintegration efforts, demonstrating the valuable contributions prisoners can make to Western Australian communities.”