A Barona Tribal security vehicle was involved in a fatal crash on a major Ramona road Saturday evening.
The San Diego County Medical Examiner has identified the victim as 53-year-old Graciela Bustos of Ramona.
The accident happened at 6:39 p.m. in the 15000 block of Wildcat Canyon Road.
CHP Sgt. Jim McNamara said it appears the driver in the security SUV crossed over the double yellow lines, slamming head-on into an oncoming car.
Bustos, the passenger in that car, suffered major injuries, and the drivers of both drivers suffered moderate injuries.
All three were taken to Sharp Memorial Hospital, where Bustos later died.
CHP officers closed Wildcat Canyon Road between Founders Way and San Vicente Road for hours and issued a Sig Alert in the area.
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Alcohol is not considered a factor in this crash, according to McNamara.