The wreckage of a twin-engine plane believed to be carrying 10 people was spotted Monday in the Santa Ana Mountains by a news helicopter, a sheriff's spokesman said.

Pilot Bob Tur of KNX-AM, a Los Angeles radio station, said it appeared the plane crashed directly into a hillside at about the 2,200-foot level, scattering wreckage over a small area. There didn't appear to be survivors, he said.Riverside County Sheriff's Sgt. Jim Hopkins confirmed that the plane had been spotted by a news aircraft around 6:30 a.m. He said it was near Pleasants Peak, where searchers had worked overnight.