At least one person died and several others were injured after a crash involving 10 cars on the I-10 Freeway in Upland Sunday night, authorities said.
According to officials with the San Bernardino County Fire Department, the crash spanned both directions of the 10 Freeway, just west of Euclid Avenue.
Authorities said initial calls about the crash on the westbound side of the freeway came in at around 8:09 p.m., with a 911 call coming shortly thereafter about additional vehicles involved in the crash on the eastbound side.
Some of the victims in the mass-casualty incident required extrication from their vehicles.
It is unclear what led up to the deadly crash, but as many as six other people, including children, were reportedly injured. Three people were taken to the hospital, one with life-threatening injuries and two others with non-life-threatening injuries.
Video taken by an independent news agency showed heavy, bumper-to-bumper traffic on the roadway as first responders tried to get to the scene.
The freeway was at least partially closed so that emergency personnel could get to the scene, treat patients and transport them to the hospital.
Just before 10 p.m., officials with the San Bernardino County Fire Department announced that all patients had been transported, and that the scene was turned over to officers with the California Highway Patrol.