SANTA CLARITA, Calif. (AP) — Two students were killed in a shooting at a high school in southern California on Thursday; the suspect, also a student, is in "grave condition" with a self-inflicted gunshot wound to the head, according to Los Angeles County Sheriff Alex Villanueva.

The sheriff said the 16-year-old suspect was one of six students taken to a hospital after the shooting, which happened Thursday morning at Saugus High School in Santa Clarita, about 30 miles northwest of downtown Los Angeles.

The sheriff said surveillance video shows the suspect pulling a handgun from his backpack and shooting five fellow students in a school quad before shooting himself.

Two of the students -- a 16-year-old girl and a 14-year-old boy -- later died at a hospital, officials said.

The suspect's .45-caliber handgun was found with no bullets remaining when it was recovered.

School district spokesman Dave Caldwell said all campus lockdowns in the district have been lifted except for Saugus High.

White House spokesman Judd Deere said President Donald Trump is monitoring the situation.

Deere said in a statement that those in the area are encouraged "to follow the advice of local law enforcement and first responders."

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