Police are refusing to give more details about an armed incident in West Auckland on Sunday evening, in which a man was shot by officers after an attempt to taser him failed.
The man, 38, was charged with assault and is under police guard in hospital.
He is in a serious but stable condition.
Police say several officers went to the man's house in New Lynn at about 6pm to speak to him about an arson.
There was a verbal altercation and officers tried, unsuccessfully, to taser the man.
He then produced a gun and was shot.
Police won't comment on whether the man fired his gun.
A boy who lives nearby has described hearing five or six shots.
The officers were unharmed.
The Police Association says tasers are an inadequate means of dealing with armed offenders and is again calling for officers to have better access to guns.
Association president Greg O'Connor says the conditions in which a taser is most effective have to be fairly ideal and, as a consequence, they are not an adequate means of protection for officers.