A northern Washington couple who were stopped while passing through Geyserville for having tinted front windows on their pickup were arrested after officers found 30 pounds of marijuana and two loaded firearms in the truck, the CHP said.

Their nervous behavior when the pickup was pulled over on southbound Highway 101 on Thursday afternoon was, in part, what gave the suspects away -#8212; along with a strong odor of marijuana emanating from the passenger compartment, authorities said.

Asked about the aroma, the driver, Luke Crosthwaite, 32, told an officer his girlfriend had earlier smoked some pot, the CHP said. Both said they were en route to Orange County, Officer Jon Sloat said.

But a search of the vehicle turned up the 30-pound stash, a loaded rifle on the floor near the back seat, a loaded semi-automatic handgun hidden in the central console and a small container of hash, Sloat said.

Crosthwaite and his girlfriend, Dulce Encinas, 30, residents of Republic, Wash., were arrested on suspicion of possession and transportation of marijuana for sale, authorities said.

Crosthwaite also was arrested on suspicion of possession of a loaded firearm in a vehicle and possesssion of a concealed fiream, the CHP said.

They were being held at the Sonoma County Jail on $30,000 bail each, jail personnel said.