SOUTH SAN FRANCISCO (CBS SF) — A man walking in the center divider of Highway 101 in South San Francisco was struck and killed late Sunday night, according to the California Highway Patrol.

A SigAlert was issued at 10:31 p.m. for the freeway as five lane were blocked and traffic was being diverted off at S. Airport Blvd.

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The CHP said the man was walking facing oncoming traffic in the center divider on northbound 101 just north of Grand Avenue at about 9:30 p.m. Sunday when he was struck by at least one vehicle.

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No other information, including the man’s identity or age, or why he was on the freeway, was immediately available.

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There was no estimate as to when the lanes would be reopened.