A Mongols associate has been charged after Gang Crime Squad detectives raided a Shoalwater home.
Officers allegedly seized a shotgun, four rifles, two firearm silencers, ammunition and cannabis plants from the Fifth Avenue property on Sunday.
The 71-year-old Mongols associate has been charged with a string of firearm offences and will appear in the Rockingham Magistrates Court on Monday, December 21.
Detectives also raided the Mongols Clubhouse and allegedly found a quantity of cocaine.
A 30-year-old man from Newman was charged with breaching a post sentence supervision order and a 33-year-old man from Ashby was charged with possessing a prohibited drug with intent to sell or supply.
They both appeared in the Joondalup Magistrates Court today.
The Hells Angels Clubhouse was also searched on Sunday.
Officers allegedly found weapons and prescription medications.
The raids come after the fatal shooting of Rebels senior bikie Nick Martin at Perth Motorplex in Kwinana on Saturday night.
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