Jeanine Quist, an administrative assistant with the Corning Union Elementary School District said that a number of students were shot and wounded, but no one was killed at the school.
"That evolved to multiple victims and multiple shots at the school, the elementary school", he told Action News Now, a TV news channel in Northern California.
A six year-old child with two gunshot wounds was reportedly transported by helicopter to a hospital. The shooter himself has been killed by police and several victims are now being treated at a local hospital.
Nathan Lyon burns toast, causes 30-minute delay in Australian first-class match
It is not the first time that in recent years evacuation had cause play to be halted. It later turned out, though, that the fire alarm had a rather comical story to it.
Johnston said officials did not have an accurate count of the total number of people injured in the shooting that unfolded across at least seven locations. A woman driving the truck was also shot; all three are being treated.
Mr Johnston said police were alerted to the shooting at around 8am local time (4pm GMT). Mercy Dignity Health confirmed that the hospital has received three patients.
More than 100 law enforcement officers were on scene. There are just four teachers on staff; each teaches at least two grades, according to the school newsletter.
Students at Rancho Tehama Elementary are being evacuated to the Rancho Tehama Recreation Hall. California Gov. Jerry Brown issued a statement in the wake of the shooting: "Anne and I are saddened to hear about today's violence in Tehama County, which shockingly involved schoolchildren".
- Man rapes friend's infant daughter in Delhi, held
- New Zealand announce squad for West Indies Test series
- Tech CEO Claims Uninhabited Land for Himself
- Fisherman makes rare catch in Ocean City
- Premier League survival is Newcastle's goal, says Jonjo Shelvey
- Greggs unveils its first-ever Advent calendar
- Inside Serena Williams' upcoming wedding
- Nandi Awards: Mohanlal wins best supporting actor award for Janatha Garage!
- Stan Van Gundy: Athletes Who Protest Are 'Brave and Patriotic'
- Taking a glimpse into Insider Trading at Diebold Nixdorf, Incorporated (DBD)