An inmate at an Auckland Prison is dead after being attacked by a fellow prisoner.
Police rushed to Paremoremo Prison around 3pm on Thursday after receiving reports of an assault in the prison's yard.
Staff at the prison scrambled to stop the assault but when police arrived they found one person seriously injured.
Despite being given medical treatment they died at the scene.
The other inmate, alleged to have attacked the prisoner, has been placed into segregation at the prison.
"Corrections will carry out a full investigation and will ensure all evidence including CCTV footage is provided to police," said Chief Custodial Officer Neil Beales.
Police say they are making inquiries to understand the circumstances which lead to the death.