A college student died Monday after jumping from rocks into a pool of water in the Angeles National Forest during a recreational outing with about a dozen other students, authorities said.
The group of 13 college students was hiking near Hermit Flats when some of them decided to jump off the rocks.
After five people had already jumped, the victim took his turn.
"After the victim jumped, he appeared on the surface but appeared to be unconscious," according to the Los Angeles County Sheriff's Department.
Some in the group pulled him from the water and tried to perform CPR while others tried calling for help on their cellphones.
The student was airlifted to a hospital where he was pronounced dead.
A Los Angeles County coroner's official said the man's identity could not be released Tuesday morning because his next of kin had yet to be notified.