Updated — April 12, 12:05 p.m. ET
The FedEx tractor-trailer that sped across a grassy median on a Northern California freeway and crashed into a tour bus, killing 10 people, was already on fire according to a nearby couple who saw the collision, the Associated Press reported.
On Thursday afternoon, the tractor-trailer slammed into a bus carrying high school students on Interstate 5. It was completely engulfed in flames.
The couple that witnessed the crash, Joe and Bonnie Duran, were northbound on the 5 Freeway on Thursday when they said a FedEx truck heading south struck their rental car and slammed into the oncoming bus.
There were reportedly 46 passengers on board the bus, many of whom were students from the Los Angeles Unified School District on their way to visit Humboldt State University for a college tour, the California Highway Patrol reported.
At least 10 people are reported dead, including the two drivers.
The crash happened on Interstate 5 north of Highway 32 in Orland, Calif.
Interstate 5 has been shut down in both directions and emergency crews are assisting in the area.
Here is a photo taken inside the bus before the crash by a survivor. The bus was operated by Silverado Stages, a tour bus company based out of San Luis Obispo, Calif.
Gov. Jerry Brown issued a statement on the accident:
"Anne and I extend our heartfelt and deep sympathies to the families, friends and loved ones of those who died in the tragic accident near Orland this evening. As we mourn the loss of those who died, we join all Californians in expressing our gratitude for the tireless work of the Red Cross and emergency personnel who responded bravely to this terrible tragedy."