Three gang members have been arrested in Nelson as part of the police's Operation Cobalt, which is aimed at cracking down on unlawful gang behaviour and intimidation,
Detective Sergeant Nick Parlane of the Tasman CIB said a series of searches on Wednesday disrupted the gang's activities.
The warrants were carried out by Nelson Organised Crime Unit with the support of Tasman CIB, targeting unlawful behaviour by members of the Killer Beez.
Two men, aged 42 and 20 are due to appear in the Nelson District Court on Monday charged with possession of methamphetamine and utensils.
Another man will appear in court at a later date.
Police said they are continuing to follow further lines of inquiry and more charges could be laid.