SAN BRUNO -- The cause of death remains unclear for a 51-year-old San Bruno restaurant owner who died Saturday night after slamming his car into a wall on Interstate 280, police said.
Isaac Mejia was driving north near the Crystal Springs Road on ramp when he lost control of his 1998 Mercedes around 11:20 p.m. and hit a concrete wall on the east side of the freeway, the California Highway Patrol said. Police said it wasn't clear if Mejia died due to the collision or "for medical reasons."
After slamming into the freeway wall, the Mercedes hit a guard rail and then shot across four lanes of 280 and collided with the center divider wall, police said. Authorities pronounced Mejia dead at the scene. He was wearing a seat belt.
The cause of the crash remains under investigation. No other vehicles were involved.
Mejia was the owner of Don Pico's Mexican Bistro and Cevicheria, which his family has owned since 1975.
Bay City News Service contributed to this report. Contact Joshua Melvin at 650-348-4335. Follow him at Twitter.com/melvinreport.