OCEANSIDE, Calif. (FOX 5/KUSI) -- A 33-year-old man was killed in Oceanside early Sunday morning when his vehicle rolled over near the intersection of El Camino Real and Vista Oceana, authorities said. The collision occurred around 2:20 a.m., the Oceanside Police Department noted in a press release detailing the incident. The driver, traveling southbound on El Camino Real in a 2007 Scion TC, struck a raised curb. The impact caused the vehicle to flip, ejecting the driver from the car. Despite the efforts of first responders, the man was pronounced dead at the scene. The driver, whose identity has not been released pending notification of family, was the sole occupant of the vehicle and no other cars were involved in the crash, police said. Authorities have yet to determine whether alcohol or speed played a role in this incident. An investigation remains ongoing and is being handled by OPD's Major Accident Investigation Team. Anyone with information about the collision is encouraged to contact Traffic Collision Investigator Jose Gomez at (760) 435-4952.