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Michael Luke Robertson got away while being moved from a patrol car into the Avondale police station in west Auckland on Tuesday.
Police tried to chase the 28-year-old after he fled, but they couldn't catch him. He was last seen running down a driveway on Great North Rd.
He is the fifth man to escape from the police in three weeks.
Auckland city commander Superintendent Karyn Malthus said two officers were taking Robertson into the station when he fled.
"He feigned that he was about to vomit, he'd been complaining of feeling ill. As he moved off to pretend to vomit he managed to scale a wall and run off."
Ms Malthus said having two officers escorting him should have been sufficient, and she was disappointed that this had happened.
"We will be undertaking a review of that situation and the police officers involved are quite gutted by this incident.
"They come to work every day to do their very, very best and no one comes to work to have these mistakes happen."
Robertson has active warrants for his arrest, including for methamphetamine possession.
The escape of three men in Levin last month, and the escape of one man in Rotorua, triggered a national review of the police's custody and transport of offenders.
Tuesday's incident will be included in that review.