SAN DIEGO—A 33-year-old Temecula man died when his motorcycle crashed into the back of Toyota truck on state Route 76 near the La Jolla Indian Reservation, the California Highway Patrol said on July 3.

At 6:29 p.m. Sunday, the rider of a Yamaha Tenere 700 was heading westbound on State Route-76 when his motorcycle crashed into the rear of the Toyota and he was ejected, according to the California Highway Patrol’s Hunter Gerber.

The highway patrol and La Jolla Reservation paramedic and fire crews responded to the scene to assist the rider, but he was pronounced dead at the scene, Gerber said.

The roadway was affected for several hours following the crash as the scene was being investigated. It was not immediately known if alcohol or drugs contributed to the cause of the crash.

The investigation was ongoing Monday morning.

Anyone with information or who may have witnessed the crash was asked to contact the Oceanside Area California Highway Patrol office at 760-643-3400.