STANTON (CBSLA.com) — A man was killed Tuesday morning by a hit-and-run driver in west Orange County.

The bicyclist was struck on Beach Boulevard south of Cerritos Avenue in Stanton, according to the Orange County Sheriff’s Department.

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Deputies responded at 4:43 a.m. and found him lying dead in the roadway.

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The man appears to have been riding out of an alleyway when he fell from his bicycle onto Beach Blvd. and was run over by a vehicle, the OCSD reports.

Witnesses told investigators they saw a dark-colored SUV slow down for a bit and then speed away towards Katella Avenue.

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Deputies closed off southbound lanes of Beach Blvd. as they investigate the crash.