"All patrons and team members are safe, however we cannot provide further comment while the investigation is in the hands of the New Zealand Police Service."
Police district operations manager Rachel Dolheguy said it was believed the shooting was gang related.
"A number of firearms incidents recently have involved elements of organised criminal groups and gangs, and at this early stage it is believed that there is some gang involvement with this particular incident."
Detective Senior Sergeant Mark Franich said police were committed to finding the person responsible and holding them to account.
"A group of people who had been removed from the bar became agitated and one presented a firearm."
After an altercation, a gun was fired into the foyer ceiling.
