This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

SAN DIEGO –Officials continue to investigate the death of a woman Saturday afternoon in a single-car crash off Interstate 15 in Rainbow.

The 73-year-old victim from Menifee was driving a Chevrolet Aveo north on I-15 when, for reasons that officials are investigating, she veered off the right shoulder of the freeway, according to California Highway Patrol Officer Mark Latulippe.

Her vehicle careened down an embankment, struck a tree and rolled before coming to rest in the shoulder of Old Highway 395 near Rainbow Glen Road, Latulippe said. The area is a little more than a mile south of the Rainbow Valley Boulevard exit.

The woman was the only person in the car. She died at the scene of the crash, Latulippe said. Authorities don’t believe drugs or alcohol were factors in the crash.

Witnesses told CHP dispatchers the driver may have been using the shoulder to pass a slower vehicle when the crash happened around 3:45 p.m.

The victim’s name was not released.