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Inside the black Mercedes SUV, officers found a cache of weapons and a small amount of marijuana, the Patrol said. A police dog searched the vehicle, finding numerous hidden compartments containing four rifles, nine handguns and a switchblade knife. Authorities also found a Taser and night vision goggles. The vehicle was seized.

Popper, who lives in Snohomish, Wash., is the owner of the vehicle, which was being driven by Brian Gourgeois, 34, of Austin, Texas, said state patrol Trooper Jeff Sevigney. The vehicle also had flashing emergency headlights, a siren and a public address system, the Patrol said.

"Popper indicated to troopers that he had installed these items in his vehicle because (in the event of a natural disaster) he didn't want to be left behind," the Patrol said in a news release. He also told officers he collected weapons, the Patrol said.