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The Los Angeles County coroner’s office has identified a 17-year-old girl as the driver who died after a crash on the Pacific Highway Coast Highway in the Malibu area Friday morning.

Dulce Maria Ramiro Sanchez of Los Angeles was killed when her car collided with another vehicle just after 6 a.m. near Topanga Canyon Boulevard, according to the California Highway Patrol.

The other driver was transported to a hospital in unknown condition, the L.A. County Sheriff’s Department said.

No other occupants were in either car.

Sky5 video showed two heavily damaged vehicles as well as debris and car parts strewn across the lanes.

The cause of the crash is under investigation.

The fatal collision prompted CHP to issue a SigAlert for both sides of the highway from Tuna Canyon Road to Topanga Canyon Road. PCH was closed for several hours before fully reopening shortly before noon.

In the San Fernando Valley, commuters on the southbound 5 Freeway near the 405 also faced delays as officials investigated another fatal collision involving at least four vehicles earlier Friday.

KTLA’s Nidia Becerra and Nancy Fontan contributed to this story.