Eastern Bay of Plenty police area commander Inspector Sandra Venables said there would be a full investigation into how Mr Tangitutu was able to leave the cell and court building and a review of court escort processes.
"But our priority at this stage is locating him. I appeal to anyone who sees him or knows of his location to contact us immediately. It is of course possible that he will seek refuge with family or friends and I need to make it clear that anyone found to be assisting him in evading police could also face prosecution."
Mana Tangitutu is Maori, about 180cm tall. He has gang affiliations and has a distinctive full facial tattoo with the word "Mongrel" above his upper lip and "MMM" on his forehead, which stands for Mighty Mongrel Mob.
He has links to the Gisborne, Whakatane, Tauranga and North Shore areas. Today's conviction was for violence and he is known to carry weapons so he should not under any circumstances be approached.
Any sightings should be reported immediately via the 111 system. Anyone else who has knowledge of where he is should contact the police or Crimestoppers on 0800 555111.