A driver was found dead inside a big rig along the snow-covered Grapevine Thursday morning, according to the California Highway Patrol.
It wasn't immediately clear how the driver died.
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A tow truck driver responded to the big rig stopped on the southbound 5 Freeway just north of Frazier Mountain Park Road at 8:30 a.m.
Kern County Fire Department determined the driver had died at the scene. An investigation was under way.