Three Corrections officers have pleaded not guilty to assault charges after a guard and inmates were injured at Auckland Prison.

The men, aged 34, 26 and 31, appeared at North Shore District Court this morning to face charges of causing grievous bodily harm with reckless disregard, assault with intent to injure, and attempting to pervert the course of justice.

All three were given interim name supression, ordered to hand over their passports, and remanded on bail.

Inmates allegedly attacked Corrections officers at Auckland Prison, Paremoremo, on May 20, and an officer was stabbed multiple times.

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As a result of the attack, police charged three prisoners, two aged 22 and one aged 24.

They appeared at the North Shore District Court on June 6, jointly charged with wounding with intent to cause grievous bodily harm and aggravated assault.

Police also investigated the force Corrections officers used after the attack. The prisoners were injured and concerns were raised by Corrections.

Auckland Prison director Andy Langley, who has been in the role for four months, said all three staff members have been suspended.

"I reported it to police and made changes to the management of the wing where the incident took place," he said.

Langley said a Corrections inspectorate report is under way alongside a full operational review.

"The Corrections Inspectorate is also carrying out a scheduled in-depth inspection of Auckland Prison at the moment, which looks at all aspects of the facility including prisoner welfare," he said.