No other cars were involved in the remote 11 p.m. crash, according to the Utah Highway Patrol. The bus reportedly went off the shoulder, into a steep wash and stopped about 200 feet off the road.
A 13-year-old girl was pronounced dead at the scene. The bus driver and two passengers were taken by air ambulance to the hospital in serious condition. All other passengers except for one suffered various injuries and were taken by ambulance to hospitals in Price and Richfield.
Officials are investigating the cause of the crash, but said a passenger on the bus reported that the driver had possibly had a medical issue.