Police have arrested 11 Killer Beez gang members after an operation lasting 6 months

Several search warrants have been carried out across Tasman in the last month, leading to the seizure of methamphetamine, cocaine, more than 100 pairs of high-end shoes and cash.

Police have also seized a sawn-off shotgun, cars and motorbikes, jet skis, and a fishing boat - which they say were bought with the proceeds of the gang activity.

Of the 11 arrested, three are senior gang members.