PACIFICA (CBS SF) — A driver was killed after plunging over a cliff south of Pacifica near Devil Slide Trail Wednesday afternoon, shutting down Highway 1 and causing a major backup for hours.

According to Caltrans, the crash was reported at about 2 p.m. It happened just south of the Tom Lantos Tunnels. According to the California Highway Patrol there were no other occupants in the vehicle.

READ MORE: Oakland Ties 2020 Homicide Total in First 9 Months of 2021

As of 5 p.m. one-lane traffic control was in place on southbound Highway 1 while first responders and CHP were working to retrieve the car and victim of the crash.

Caltrans said there was no estimated time for reopening.

MORE NEWS: Pelosi Expects House to Pass Infrastructure Bill This Week