Petaluma police arrest man accused of having stolen assault rifle

Petaluma police executing a search warrant Friday morning arrested a man after finding a stolen assault rifle on his bed, police said.

Christopher Rosen, 36, was arrested on suspicion of possessing the stolen weapon, and for offering to sell it along with high-capacity magazines. He was booked into the Sonoma County Jail.

Police served the search warrant at a house on the 500 block of Albert Way around 8:30 a.m., according to a news release. They had information that Rosen had an illegal assault rifle and was trying to sell guns online.

Four people were detained while officers searched the house. They found three loaded guns, including the rifle, which was reported stolen after a residential burglary in Cloverdale. Three pounds of marijuana were also found in the home, according to police.

The guns were in Rosen’s room and so he was arrested, while the other three people detained were released.

Petaluma police are still investigating a robbery and shooting that happened at the same house in August. No arrests have been made and police are asking anyone with information to call (707) 778-4372.