SACRAMENTO, Calif. (AP) _ A Greyhound bus veered off Interstate 5 near Sacramento on Friday, injuring at least 37 people, officials said.

Witnesses said a passenger without a ticket grabbed the steering wheel and caused the bus to swerve into a ditch. The man fled, and officers brought in dogs to search a nearby wooded area.

A helicopter took at least one passenger to a hospital. California Highway Patrol Officer Dan Cameron said officers at least two people were trapped on the bus.

Passenger Trent Pursley, 23, said the force of the impact uprooted some of the seats from the back of the bus.

``God was watching over me, that's for sure,'' he said.