A bus carrying at least 36 people, many of them teenagers, rolled over in the San Bernardino Mountains on Sunday night, sending 20 people to the hospital, according to authorities.

Twenty people were hospitalized after a bus overturned and crashed in the San Bernardino Mountains in Calif. on Sunday. Nov. 9, according to fire officials. Three of those hospitalized suffered severe injuries.

Authorities say 20 people were hospitalized, three with major injuries, after a bus carrying teens returning from a church camp overturned on a winding mountain road in Southern California.

Highway 330 was completely shut down Sunday night following a solo bus rollover crash in San Bernardino County, authorities said. The crash was reported just after 9 p.m. near the Fredabla neighborhood in Running Springs.