Another five were taken to Mercy Medical Center in Redding in fair condition.
One patient was admitted to the burn unit of University of California, Davis, Medical Center in critical condition.
A nursing supervisor said three people were taken to Oroville Hospital in Oroville. She declined to describe their conditions, citing patient privacy laws.
Bonnie Kourvelas, a FedEx spokeswoman, said in a statement Thursday night: “Our thoughts and prayers are with everyone involved in the tragic accident on I-5 in California. We are cooperating fully with authorities as they investigate.”
The American Red Cross set up a relief station at a Veterans Memorial Hall community center in Orland, Calif., about five miles from the crash site. Officer Joel Lynch said seven kids who were not hospitalized with injuries are staying there tonight with about 25 volunteers. Outside more than a dozen packs of bottled water and energy drinks and packages of potato chips were left for students. A community member had ordered pizza for the students.
Joseph reported from San Francisco. Associated Press Photographer Rick Pedroncelli in Orland, Associated Press Writers Lisa Leff in San Francisco and Daisy Nguyen and Tami Abdollah in Los Angeles contributed to this story.