Police have seized a firearm and other weapons at a property understood to be the Mongols Motorcycle gang headquarter on the outskirts of Christchurch.
Police confirmed they executed a search warrant on a property at Main South Road, Burnham, this morning.
In February the Mongols MC property in Burnham was raided and the police seized $50,000 in cash, 10 guns, and drugs.
Police said in today's search of the property, a firearm, firearm parts, other weapons, and a small amount of drugs were found.
One person was charged in relation to possession of an offensive weapon and police said further charges were being considered.