A prisoner has been airlifted to hospital after an assault at Bunbury Regional Prison.
The 40-year-old man was involved in an altercation with another prisoner around 9am on Sunday.
He suffered serious injuries and was conveyed to Bunbury Hospital before being airlifted to Royal Perth Hospital where he remains in a critical but stable condition.
A 38-year-old man is assisting police with their inquiries.
Postman injured in Wannanup crash
A postman has been taken to hospital following a crash in Wannanup.
Man charged after allegedly stealing service medals from Greenfields storage unit
Mandurah Police are asking for the public's help to recover a stolen set of service medals.
South West resort receptionist charged with 32 fraud offences
A South West resort employee has been charged after allegedly using guests credit card details to purchase items and accessing the retreat's eftpos machine to refund money into her own bank account.
Daughter of Port Kennedy hit-and-run victim pleads for offenders to hand themselves in
The daughter of a Port Kennedy hit-and-run victim is pleading for the two offenders to hand themselves in.
Concerns for missing woman last seen in Mandurah
Mandurah Police are urgently seeking the whereabouts of a 31-year-old woman who has not been seen for four days.
Mandurah woman wanted for questioning over current investigation
Mandurah Police are urgently looking for a 35-year-old woman who is wanted for questioning over a current investigation.
Investigation underway into Bunbury sexual assault
Detectives are continuing their investigation into the alleged sexual assault of a 17-year-old girl in Bunbury.
Two motorcyclists seriously injured in separate crashes
Two motorcyclists have suffered serious injuries in separate crashes in Perth and the South West.
Miraculous escape for two men after plane goes down south of Mandurah
Two men have miraculously survived a plane crash south of Mandurah.