The California Highway Patrol is asking for help in finding a driver who hit a pedestrian near Bonsall around 5:55 a.m. on Saturday.
The suspect fled the scene after hitting the man on State Route 76 near Via Monserate.
The 25-year-old victim suffered major injuries and was transported to Palomar Medical Center, CHP Officer Mark Latulippe said.
The suspect was reportedly driving a dark red, early 1990s model Toyota Corolla. The car's right front headlight and bumper were damaged in the collision.
The CHP seeks any information from the public about the suspect vehicle and driver and will continue to investigate the situation.
Anyone with information can call (858) 637-3800.