Police have arrested 19 members of feuding gangs in Auckland and seized three firearms.
Photo: Supplied
The conflict between the Head Hunters and Mongols hit headlines when shots were fired inside the Sofitel Hotel foyer in Auckland central on 15 April.
Detective Inspector Kevin McNaughton said no one had been injured in a string of gang related incidents.
"However, these were extremely serious and there was a significant risk to members of the public," McNaughton said.
A police investigation team involving staff from Tāmaki Makaurau, Northland and the National Organised Crime Group worked on the operation for two months.
McNaughton said earlier in April there were arsons and drive-by shootings at properties associated with the two gangs.
The police operation focused on the Head Hunters' gang premises in Mt Wellington and Browns Bay, and the Mongols' bases in Silverdale and Murrays Bay.
"Three firearms were also located and seized as part of the operation, including a prohibited semi-automatic rifle and a sawn-off shotgun, as well a significant quantity of ammunition and improvised explosive devices," McNaughton said.
The latest arrest was made last week.
Seven members or associates of the Mongols and six members of the Head Hunters gang were among those arrested.
They have been charged with a range of serious offences, including participating in an organised criminal group, doing a dangerous act with a firearm with intent to cause grievous bodily harm, possession of firearms and explosives, and drug dealing.
Further charges are possible.
Another six associates of the Head Hunters gang have been charged as accessories for allegedly helping an offender involved in the Sofitel shooting to escape police.