Tehama County Assistant Sheriff Phil Johnston told reporters that the assailant was killed by police following the mass shooting, which began around 8:00 am (local time) at a home in Rancho Tehama Reserve and continued at several locations in the community, including the elementary school.
He said no children were among the dead and the motive for the assault was unclear, although it may be linked to a domestic dispute and a history of disagreements with neighbors.
"This man was very, very intent on completing what he set out to do today."
He said one child was shot and wounded at the school. Another suffered non-life-threatening injuries while riding in a car with his mother, who was severely wounded.
Also Read
Johnston said the gunman, who has not been identified, went on his shooting spree after stealing a neighbor's vehicle and then tried to gain access to the school but was unsuccessful as it was on lockdown.
One of the four victims was a woman the gunman had previously been accused of stabbing, Johnston said.
Rancho Tehama resident Salvador Tello, who was taking his three children to school, described seeing the gunman open fire, killing a woman.
Tello "said he saw bullets strike the truck in front of him and he put his children down to protect them and put his truck to... reverse," Redding Record Searchlight newspaper reporter Jim Schultz said on Twitter.
Another witness, Casey Burnett, said the gunman was "driving around and shooting randomly from his car."
Area resident Brian Flint told local media that his roommate had been shot and killed by the gunman.
"He's dead. He didn't make it," Flint told KCRA, referring to his roommate. "For his family and everything, I feel bad, and we'll be there for them."
He said the gunman was a neighbor and had "been shooting a lot of bullets lately, hundreds of rounds, large magazines."
Johnston told reporters that three weapons -- a semi- automatic rifle and two handguns -- had been recovered from the scene.
He added that some 100 law enforcement officers responded to the shooting.
The Redding Record Searchlight said among the wounded was a six-year-old who suffered two gunshot wounds and another child shot in the leg.
The elementary school is located on the outskirts of Corning, an olive oil-producing town of around 8,000 people about 100 miles (160 kilometers) north of the state capital Sacramento.
More than 33,000 people die annually in the United States from gun-related deaths -- two thirds of them suicides -- according to the Centers for Disease Control and Prevention.
Disclaimer: No Business Standard Journalist was involved in creation of this content