Two people have been arrested in and cash, cannabis and a firearm seized after police stormed a house in Whangārei.
A search warrant was executed at a Tikipunga house with known gang links on Thursday.
As a result, a pump-action firearm, ammunition, a large amount of cannabis and more than $1400 cash was seized.
A 40-year-old woman was arrested and faces 20 charges of supplying methamphetamine and one of selling cannabis, police say. She is due to reappear in the Whangārei District Court on June 10.
A 19-year-old man has been charged with unlawful possession of a firearm, possession of cannabis for supply and a representative charge of selling cannabis, and is due to reappear in the Whangārei District Court in July.
"The ongoing supply of any illicit drug in our communities results in huge social harm, negative health implications and financial harm, particularly to drug users and their families," Detective Sergeant Shane Pilmer said.
"Police will continue to actively target those with links to organised crime and those involved in the sale and supply of methamphetamine in our community.
"Police welcome information from anyone who has concerns about organised crime, the supply of illicit drugs or the illegal possession of firearms in the community.
Anyone with information is encouraged to report it online at 105.police.govt.nz, call Police on 105, or report it anonymously via Crime Stoppers on 0800 555 111.
"Police will continue to recover unlawful firearms and prevent firearms-related violence by criminal gangs and organised crime groups, as part of the nationwide Operation Tauwhiro," said Det Sgt Pilmer.