WHITTIER (CBSLA.com) — A portion of the northbound 605 Freeway was shut down in Whittier Monday while authorities investigated the circumstances surrounding a deadly hit-and-run crash.

According to California Highway Patrol officers, the crash occurred shortly before 2:30 a.m. near Slauson Street.

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A preliminary investigation revealed a Chevrolet Camaro and a Toyota Prius collided into each other on the freeway and subsequently caught on fire.

One of the drivers was pronounced dead at the scene. The victim’s identity is being withheld pending family notification.

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The other driver fled from the scene on foot.

No other injuries were reported.

All northbound lanes of the freeway will remain closed until just before 7 a.m., officials said. Traffic was diverted onto Telegraph Boulevard.

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The cause of the crash remains under investigation.