CHP searching for semi-truck driver who drove off after fatal crash on Livermore freeway

LIVERMORE, Calif. (KGO) -- The California Highway Patrol needs your help to find the driver of a semi-truck who drove off after a fatal traffic collision on Interstate 580 in Livermore.

The fatal crash happened at 7 a.m. Thursday on eastbound I-580 near the North Livermore Avenue exit.

Three vehicles were involved: the semi-truck - which was not pulling a trailer - a grey Nissan SUV, and a Toyota Tundra truck, which overturned.

CHP officials say one person was killed.

Four lanes of I-580 were closed for hours after the crash.

The CHP is asking witnesses to reach out to investigators.