An inmate has been seriously assaulted at Bunbury Regional Prison.
An inmate has been seriously assaulted at Bunbury Regional Prison.
The assault, between two prisoners, happened around 9.40am on Saturday.
A 42-year-old man received life-threatening injuries and was rushed to Royal Perth Hospital where he remains in a critical but stable condition.
A 19-year-old man is assisting police with their investigation.