An inmate at Christchurch Men's Prison has been stabbed in the head by a group of men.
The 26-year-old male prisoner was serving lunch at around noon yesterday when he was grabbed by "three or four" men and attacked, police say.
Detective Sergeant Geoff Rudduck says he was stabbed in the head multiple times with a piece of wire.
The injured inmate was taken back to his cell and given stitches for some cuts to his head that weren't life threatening.
Police say they are investigating the possibility of a gang connection.