An imitation handgun and large hunting knife were found in a vehicle pulled over by police in Truganina on Friday night.
Members of the VIPER Taskforce intercepted the red Holden Commodore in Leakes Road at about 8.30pm on June 2 after noticing its registration plate hanging off.
A search of the vehicle resulted in an alleged imitation Glock handgun, a hunting knife and a quantity of marijuana being seized.
One of the passengers, a 22-year-old Truganina man, was arrested over five outstanding warrants and is expected to be charged over possessing a firearm, a prohibited weapon and giving a false name to police.
The driver of the vehicle, a 25-year-old from Truganina, will be summonsed for driving while suspended and failing to display P-plates.
Another passenger, a 21-year-old man also from Truganina, was cautioned for possessing marijuana and is expected to be summonsed for providing a false name and address.
The VIPER taskforce commenced in July 2022 targeting organised crime, street gangs and outlaw motorcycle gangs.
