A 68-year-old Columbia man died Wednesday afternoon after his car left the road and hit a tree, the California Highway Patrol reported.
According to the CHP, the man, whose name has not been released, was driving a 1997 Chrysler LHS west on State Street in Columbia at 1:30 p.m.
The car was speeding when it left the road, sideswiped a tree, hit several mailboxes, then hit another pine tree.
A witness and passersby tried to help the driver, who was taken to Sonora Regional Medical Center, where he was pronounced dead. There was nobody else in the car.
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The CHP said the cause of the accident remains under investigation.