A kidnapping suspect killed during a standoff with Sonoma County sheriff's deputies was shot twice in the torso, according to the results of Monday's autopsy.

Richard Shreckengaust, 37, of Marin County was shot Thursday after he rolled up the driver's side window as a police dog approached him and lunged toward the right inside the vehicle, Santa Rosa Police Lt. Paul Henry said.

Fearing Shreckengaust was reaching for a weapon, a deputy fired two shots through the rear windshield and struck him, Henry said. Russian River fire department paramedics pronounced Shreckengaust dead at the scene.

Authorities later found three sharp objects in the center console of Shreckengaust's car: A four-inch knife, an eight-inch metal "stabbing instrument" and a pair of small, one-inch scissors, Henry said.

Shreckengaust had picked up a woman Thursday and, after they smoked marijuana, began acting strange, claiming he had explosives in the car, police said. Instead of dropping her off in Terra Linda, Shreckengaust drove north on Highway 101, terrorizing her but apparently unaware she was pleading for help in text messages to a friend, who called police, police said.

Authorities started tracking Shreckengaust on Guerneville Road and were following as he lost control of his car on Odd Fellows Park Road in Guerneville, crashing into an embankment, at which point the woman fled from the car, police said.

Santa Rosa police are reviewing the shooting as part of a countywide agreement designed to provide a neutral examination of officer-involved shootings.

You can reach Staff Writer Julie Johnson at 521-5220 or julie.johnson@pressdemocrat.com. On Twitter @jjpressdem.