BENTON COUNTY, Wash. - Washington State Troopers were called to the scene of an accident on Interstate 82 just south of the Locust Grove exit.
The body of 32-year-old James Haworth was found shot in the head.
Benton County Sheriff's are investigating the death. Deputies said the gun shot wound could to be self-inflicted but detectives are looking into whether Haworth was the only person involved.
Benton County Captain Charles Kissler said, "This is a joint investigation involving the Washington State Patrol and Benton County Sheriff's Department. They're investigating the accident we're handling the death investigation of the individual."
Deputies said there were no other vehicles involved in the crash. The vehicle traveled about 300 yards before crashing. Haworth was found dead in the drivers seat. The investigation continued.