A man was seriously injured following an alleged attack at Paremoremo Prison yesterday afternoon.
Emergency services were called to the Auckland prison just after 3pm yesterday after a male, aged in his 20's, had been stabbed.
Prison Director Andy Langley confirmed a prisoner was taken to hospital after an alleged assault.
"The area in which the assault took place is secured as a crime scene and police have been informed," he said.
"Corrections will also carry out a full investigation into the incident, and will ensure all evidence is provided to police."