An 18-year-old Fullerton man was killed and his passenger injured when their vehicle overturned, ejecting both men, police said Monday.
The victim, Mark Steven Villegas, suffered head injuries in the one-car accident, which occurred shortly after midnight Sunday.
Villegas, who drove a 1969 Datsun 510, was westbound on Chapman Road near Melody Lane when he apparently struck a curb and lost control, Placentia Police Sgt. Jay Fricke said.
The car rolled over, ejecting Villegas and his passenger, whose name was not available Monday. Police are trying to determine whether Villegas was driving at an unsafe speed, Fricke said.
Neither man wore a seat belt, according to police reports.
Villegas was pronounced dead hours later at UCI Medical Center in Orange. His passenger was transported to Western Medical Center in Santa Ana, Fricke said.