ALAMO -- A man was taken to the hospital for a psychiatric evaluation Monday after responding officers discovered the hit and run accident he was reportedly the victim of had never taken place, the Contra Costa Sheriff's Office said.

About 3:30 p.m., California Highway Patrol officers responded to the scene of a reported hit and run accident involving a pedestrian at the intersection of Danville Boulevard and Ridgewood Road, according to California Highway Patrol Officer Scott Cakebread. The caller reported that a man in his 20s was lying in the road, and that a gold Lexus had hit him and sped away.

It was not immediately known whether the caller was the reported victim or a purported witness, Contra Costa Sheriff's spokesman Jimmy Lee said.

Officers responding to the scene soon discovered evidence that suggested that a crash had never taken place, Lee said. The ambulance, originally dispatched to take the man to the hospital to be treated for injuries relating to a crash, took the man to John Muir Medical Center to undergo a psychiatric evaluation.

The man has not been charged with any crime, Lee said.

Contact Erin Ivie at 925-847-2122. Follow her at Twitter.com/erin_ivie.