ANTIOCH — A motorist died and authorities shut down the eastbound direction of Highway 4 after gunfire erupted Saturday night, the California Highway Patrol reported.

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16-year-old East Bay girl fatally shot in Oakland, teen boy arrested Authorities pronounced the male driver of a blue Toyota Solara dead at the scene and did not immediately release his age or identity. The suspect in the shooting fled the scene, and police were searching for the vehicle. They did not provide a description of it.

The shooting happened about 9:03 p.m. on eastbound Highway 4 just west of Hillcrest Avenue, according to a statement from the CHP. It was not immediately known what may have led up to the shooting. The CHP shut down all lanes of Highway 4 for more than an hour to investigate.

The CHP is seeking witnesses, as well as anyone who may have seen the Toyota Solara before the shooting. They can be reached at 1-800-835-5247.

There have been three freeway shootings on Bay Area freeways reported by the CHP since the start of 2017. A person suffered nonfatal injuries in a shooting on southbound Highway 242 near the Grant Street exit in Concord on Jan. 15, hours after a shooting on westbound Interstate 80 near Carlson Boulevard.

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Contact Rick Hurd at 925-945-4789.