A group of boys had to be talked off the roof of a south Auckland youth justice facility after overpowering staff and stealing their keys.
An opposition MP says it highlights an ongoing problem at the site and has called for the government to step in.
Six police units and the Fire Service were called to the Korowai Manaaki Youth Justice Residence in Manurewa just before midnight on Friday.
Seven boys had overpowered three night staff in a unit at the centre and taken their keys before escaping onto the roof, according to Child, Youth and Family youth justice support general manager Chris Polaschek.
He said although no one was hurt and there was minimal damage done to the facility, the staff involved had been left "shaken".