SAN DIEGO (FOX 5/KUSI) — A motorcyclist killed last weekend in a crash in Oceanside has been identified by county officials. Karl Trayvilla, 30, died in the collision on Coast Highway, just south of West Street, the San Diego County Medical Examiner's Office said on its website. On Saturday afternoon, Trayvilla, who was wearing a helmet, was traveling southbound when the front wheel of his motorcycle collided with the rear wheel of a motorcycle in front of him, according to Oceanside police. One dead after stabbing of off-duty school officer on Fiesta Island leads to shooting Both riders were ejected -- Trayvilla was run over by a Toyota Yaris also heading south on Coast Highway, while the other rider continued past the car and ran into the side of another vehicle. Trayvilla was taken to a hospital, where he died from major head and chest trauma. The second rider was treated at the scene for injuries. The two drivers in the vehicles were not hurt. An investigation remains ongoing. Anyone with information about the crash is asked to contact Officer Jose Gomez at 760-435-4952.