At least five people are dead after a gunman opened fire at seven locations in a rural Californian town - including at a primary school.
The shooting, which took place on Tuesday, has so far seen at least two young students wounded. It is not yet clear if any pupils are among the dead.
The shooting spree occurred just after 8am on Tuesday (local time), according to reports, and is thought to have started as a domestic violence incident.
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An officer told ABC News the shooter, who wielded two handguns and a semi-automatic rifle, appeared to randomly pick his targets.
Two officers were involved in a gunfight with the shooter, who has now been pronounced dead.
Tehama County Assistant Sheriff Phil Johnston said Rancho Tehama School had seen a number of students airlifted to hospital, with at least seven people hospitalised.
"We have about 100 law enforcement personnel in Rancho Tehama right now, with multiple, multiple scenes," Sheriff Johnston said.
"I know that we have [airlifted] a number of students. I know that we have children that were attending school in a safe location at this time."
Tehama, the community in which the shooting occurred, is about 210km north of Sacramento and has a population of less than 1500.
The identity of the gunman has not yet been revealed by authorities.