Canterbury police say they have exposed a methamphetamine supply ring in Christchurch after they executed searches of several addresses across the city.
Hundreds of thousands of dollars worth of methamphetamine, cash, motor vehicles and synthetic drugs were seized during the operation on Wednesday.
Detective Sergeant Phillip Sparks says at least one firearm has been recovered.
Three men were arrested and are due to appear in court on Thursday on a range of charges.
"Police will continue to detect, intervene and disrupt organised crime groups in Canterbury to prevent methamphetamine distribution in the city," Det Sgt Sparks said.
"This is a message to drug criminals and organised crime groups that police won't tolerate them making money out of drug users and harming the community."