Authorities continue to investigate the cause of a solo-vehicle crash Friday, although they are looking into the likelihood that the victim died in a suicide.

California Highway Patrol Office Tom Maguire said Loretta Hale's death was probably a suicide. Loretta Hale, 58, died Friday after her black 2006 Land Rover went off South Gate Road.

Her SUV  tumbled down a steep embankment before coming to rest in a rugged area a half-mile south of the South Gate entrances, fire and California Highway Patrol officials told the Contra Costa Times.

Maguire said there was no collision. The San Ramon Express said that Hale had been reported to authorities as missing and suicidal.