Video of a fatal car crash shows Bruce Jenner's vehicle rear-ended two cars and pushed one into oncoming traffic, a law enforcement official says.

The official said Jenner steered his Cadillac Escalade to avoid a collision on February 7 in Malibu and rear-ended a Lexus sedan.

The driver of the Lexus was killed when her car was struck head-on by a Hummer.

The official was briefed on the video but was not authorised to speak publicly and talked on condition of anonymity.

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Video shows Jenner's SUV also hit a Prius. Officials initially said the Lexus had struck the Prius as it slowed approaching a traffic light.

The video does not appear to show Jenner using his phone. The 1976 Olympic decathlon champion passed a field sobriety test.

- AP