At least one person had died and two more were injured in a crash that involved a city bus and several other vehicles in Santa Clarita on Saturday, officials said.
The collision was reported around 5 p.m. at the intersection of Golden Valley Road and Sierra Highway, according to the Los Angeles County Fire Department.
The entire intersection was closed in both directions for an unknown amount of time, the California Highway Patrol said. The roadways remained closed around 11 p.m. Saturday night.
Three vehicles were involved, including the bus, L.A. County sheriff's officials said.
A black Toyota Corolla, a large Ford pickup pulling a U-Haul trailer and a camper trailer had all sustained significant damage, footage from the scene shows.
The camper trailer had overturned, firefighters confirmed, but it was unclear what became of the car it had been attached to. Officials had previously said the trailer was a motorhome.
The chain-reaction collision began when the Ford slammed into the Corolla from behind as the car was stopped at a light, waiting to make a left turn, investigators said.
The Toyota's driver, a woman who lives in Santa Clarita, was killed by the weight of the impact and pronounced dead at the scene, officials said.
After hitting the woman's car, the truck and trailer then careened into the city bus, where one passenger was injured.
The bus was propelled into a power pole, causing a power outage in the local area.
The bus passenger and Ford driver were both transported to the hospital for treatment. One had sustained minor injuries with the other was severely injured, firefighters said, though it was unclear who was more gravely harmed.
No further details were immediately available.
Correction: A previous version of this article misstated the number of vehicles involved. It is three.
KTLA's Meghan McMonigle contributed to this report.