A gun was fired as bar patrons stepped into to deal with a man armed with a shotgun during an aggravated robebry.
Detective Senior Sergeant John Clayton, of Whangarei CIB, appealed for witnesses to the aggravated robbery at Tikipunga Tavern in Whangārei overnight.
Police said two offenders entered the tavern at about 10.50pm last night, one armed with a shotgun and the other armed with an object similar to a screwdriver.
The people demanded cash and then attempted to remove money from tills.
"At the same time, tavern patrons have taken exception to these offenders and have intervened with the offender with the shotgun," Clayton said.