Eleven people have been arrested after an investigation into the sale and distribution of methamphetamine in the Palmerston North area.
Members of the Palmerston North-based Nomad gang were among those arrested, including the vice president.
Together, the group face more than 60 charges following.
Methamphetamine, a firearm, ammunition and a taser were among the items seized.
Manawatu Organised Crime Unit Detective Sergeant Johnny Oram said the operation had been running since February. Further arrests were likely.
"Gangs and methamphetamine go hand-in-hand and the harm they cause to the community is substantial.
"We want to be clear that police are determined to reduce their influence over the venerable members of society that they prey on and profit from."
Six men - aged 51, 48, 47, 43, 35 and 24 - and five women - aged 47, 45, 42, 30, and 28 - appeared in Palmerston North District Court yesterday and today.
Eight were remanded in custody to re-appear in July.