PACIFICA (CBS SF) — Pacifica police are at the scene of a major multi-vehicle accident Tuesday on Rockaway Beach Avenue near Highway 1 that hospitalized two people with serious injuries, according to authorities.

The Pacifica Police Twitter account posted about what it described as a “large scale traffic collision” shortly after 2:30 p.m. Tuesday afternoon.

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Police later confirmed that the collision happened at approximately 2:15 p.m. North County Fire units also responded.

Footage of the crash showed a box truck that was in the middle of a multi-vehicle collision involving four other cars just off of Highway 1 on Rockaway Beach Avenue. One of the vehicles appeared to have been engulfed in flames, but had been put out.

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Pacifica multi-vehicle crash near Hwy 1 (CBS)

Police later confirmed that one subject was transported to an area hospital and is in critical condition and a second person was also hospitalized with major injuries.

Drivers were advised to expect delays traveling in both directions of Highway 1.

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The KCBS Traffic Twitter account later posted that traffic was backed up on Highway 1 from Paloma Avenue.