ORINDA (CBS SF) — The California Highway Patrol has tentatively identified a San Francisco man who died early Sunday morning in a solo crash on state Highway 24 in Contra Costa County near Orinda.

The fatal incident was reported at 2:53 a.m. on Highway 24 west of Orinda, according to the CHP.

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Andrew E. D. Tanner, a 36-year-old San Francisco resident, was driving a 2004 Lexus eastbound at an unknown speed when he drifted into the center divider, went up an embankment, went airborne and collided with a tree. Tanner was ejected from the vehicle, according to the CHP.

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When the Lexus came to rest on a dirt embankment adjacent to the highway, it had landed on top of Tanner. He was pronounced dead at the scene by firefighters, according to the CHP.

Officers believe that alcohol may have been a factor in the crash.

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