It was a multi-vehicle crash just before 4 a.m. that involved a pedestrian, according to the California Highway Patrol.
[Ads /]
Officers responded to a report of a collision in the eastbound lanes of the highway near the San Marco Boulevard off-ramp. It is unclear how many cars were involved in the crash.
All lanes are currently back open after being blocked on Westbound Highway 4 at San Marco Blvd. in Bay Point.
[Ads /]
Stay with ABC7 News for updates on this developing story.