Police have busted a "significant drug-dealing network" centred in the Waikato region, arresting 29 people including a senior member of the Waikato Mongrel Mob.
Detective Inspector Graham Pitkethley said Operation Kingsville, a three-month investigation spearheaded by the Waikato Police Organised Crime Squad, used 20 search warrants in Waikato, Auckland and Bay of Plenty this week.
"We know that greed is driving these offenders," Pitkethley said.
"They push drugs onto vulnerable users and suck money and resources out of some of our most deprived communities, including their own family members and associates.