A 29-year-old woman was killed in an early morning car crash after she hit a guard rail and rebounded into another car on the 710 Freeway, authorities said.

The California Highway Patrol said the woman, who has not been publicly identified, was traveling northbound on the 710 Freeway near Del Amo Boulevard at about 3 a.m. when she veered her 2020 Dodge Charger right into a guard rail “for an unknown reason.”

The force of the collision caused her car to veer left and crash into a 2021 Toyota Tacoma traveling in the far left lane, killing the woman, according to the CHP. The Toyota’s driver, a 21-year-old man, sustained only minor injuries, authorities said.

The CHP said they do not know why the woman crashed into the guard rail and it wasn’t clear how fast she was going. The investigation is ongoing.