Police have named the man who died after being floored with a single punch outside a bar on Friday night.
David Keith Mernin, 51, of Pakuranga died after the altercation outside the Heading Home Bar.
A 48-year-old man has been charged with assault.
Police spokeswoman Angeline Barlow said a post mortem examination was carried out this morning and police will decide on further charges after receiving the results.
Police are carrying out inquiries in an attempt to locate and speak to everyone who was in the area of the bar and neighbouring restaurants on Friday evening.
Mr Mernin died in Auckland's Middlemore Hospital 24 hours after being found unconscious outside the bar in Pakuranga.