Part of the Dunedin suburb of Pine Hill was cordoned off early this afternoon, after members of the public told police they'd seen a person with a rifle.
The sighting was on a property at the corner of Pine Hill Road and Hillary Street where police say a number of Black Power gang members live.
Armed officers cleared the premises and searched the 18 occupants.
They found no firearms and made no arrests - however did seize a number of weapons, including knives and axes.
During the operation police say they liaised closely with Liberton Christian School, which is adjacent to the property - and pupils were kept inside while the searches were completed.