An inquiry into the fatal police shooting of a suicidal Porirua man with a machete has found the officer's actions were lawful.
The Independent Police Conduct Authority found that the shooting of Christopher Brown in February was lawful as the officer's decision to fire was proportionate to the imminent threat Mr Brown posed.
Authority Chair Judge Colin Doherty said he was satisfied the officer feared Mr Brown wielding a machete would result in either serious injury or death.
"The speed and aggressive nature of Mr Brown's attack severely restricted the options available to the officer to defend himself. Attempts to convince Mr Brown to drop the machete were unsuccessful," Mr Doherty said.
Wellington District Commander Superintendent Sam Hoyle said police had acknowledged the findings in what had been a traumatic incident for everyone involved.
"No police officer wants to have to use lethal force, however, police staff must act to keep themselves and communities safe and in this case the officer was faced with a violent individual who was armed and in an agitated state," he said.
Christopher Brown was shot by police in February last year after he violently assaulted his ex-partner and damaged her home, before fleeing in her vehicle armed with a large knife.
Police began an armed search for Mr Brown, who was spotted by police driving north of Porirua.
Mr Brown then crashed his car into a building following a short pursuit and got and approached one of the officers while raising a machete.
After repeated calls for Mr Brown to drop the machete, the officer shot him in the right shoulder.
He then died while being transported to Wellington hospital.