After an investigation into the Rebels Motorcycle Chapter, police say they seized 800g of methyl-ampethamine with a street value of $200,000 and a quantity of cash.

They allege that a further $250,000 worth of drugs has been trafficked in the past six months.

Police have so far arrested 12 past and current members of the group, and say they expect further charges to follow.

All 12 have been charged with trafficking in methyl-amphetamine and summonsed to appear in the Launceston Magistrates Court.