A Havelock North property was targeted by police as part of a nationwide series of raids against the Mongrel Mob yesterday morning.
Simultaneous search warrants involving 100 officers and police drug dogs were carried out at 20 addresses in Havelock North, Blenheim, Picton, Nelson, Hokitika, Lower Hutt, Auckland, Palmerston North and Christchurch.
A clandestine drug laboratory was located at an Auckland address and cannabis grow rooms were found in Hokitika and Wakamarina, police said.
The operation, backed by the Organised and Financial Crime Agency NZ, focused on the Tasman police district where police believed the Mongrel Mob were involved in drug dealing.
Of the 22 arrests nationally, which included seven patched Mongrel Mob members, there were 14 arrests in the Marlborough region alone.