SAN PABLO (CBS SF) — Four persons died Saturday night in a collision on westbound Interstate Highway 80 in San Pablo, California Highway Patrol officials said.

The collision involving 5 cars was reported at 8:11 p.m. at Highway 80 at the San Pablo Dam Road off-ramp.

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A Sig-alert was issued at 9:22 p.m. because all westbound lanes of Highway 80 were blocked near the collision.

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One car flipped over. Four people were killed, and six others were hurt and transported to nearby hospitals.

Authorities said the crash was so horrific they could not tell the identity or ages of the victims. At least one of the injured is a minor.

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