A man struck by at least three vehicles on Interstate 5 in Chula Vista died early Wednesday, according to the California Highway Patrol.
The crash occurred at 5:30 a.m. on the northbound lanes of I-5 near the Palomar exit.
CHP officers are looking for the driver who first hit the pedestrian, then kept driving.
The pedestrian was then struck two more times, once by a motorcycle, and once by a car.
The CHP is asking anyone who may have seen what happened to contact them.
Traffic is backed up in the area as officers investigate.
No other information was available.
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