A motorcyclist from Long Beach died on Palomar Mountain Saturday when he missed a curve on South Grade Road and went into a rocky ravine, authorities said.

He has been identified by the county Medical Examiner’s Office as Marc Yacoubian, 58.

He and two other motorcyclists were headed north up the twisting road from state Route 76 about 4 p.m. when the accident occurred, California Highway Patrol officers saiid.

It wasn’t clear why one of the riders was unable to negotiate a sweeping left curve, Officer Jim Bettencourt said. He said the man’s 2006 Harley Davidson muscle bike veered off the right shoulder and down a slope. The rider was found dead.


He was not suspected of drunken driving, Bettencourt said. Investigators did not immediately determine how fast the rider was going.