Inmates at an Auckland prison were put in lockdown for 48 hours after obstructing corrections officers and disobeying orders.
Auckland South Corrections Facility prison director Mike Inglis said 12 inmates in a high-security wing at Wiri Prison were kept in their cells over the weekend to maintain security, while another 44 were let out of their cells for an hour a day.
He said the prisoners "obstructed officers in their duties and disobeyed a lawful order".
The 12 prisoners directly involved in the incidents remained in their cells over the weekend to maintain security, in accordance with the Corrections Act.
"They were regularly monitored to ensure their continued health and wellbeing.