Mountain Ranch, CA…An Antioch woman was driving a gray Chevrolet Impala and was traveling southbound on Railroad Flat Road approaching Sheep Ranch Road. For an unknown reason, she drove off the roadway. After leaving the roadway, the Chevrolet hit a fence then overturned and impacted a tree. The collision caused extensive damage to the vehicle and both occupants were trapped. After the driver and passenger were removed from the vehicle they were transported by ambulance with major injuries. Unfortunately, the passenger did not survive the collision and passed away at Lodi Memorial Hospital.

It does not appear that drugs and/or alcohol played a role in this collision.

There are no further details available at this time.