Authorities said that two people died and at least four others, including the suspect, were injured in a shooting on Thursday at a high school near Los Angeles.

Los Angeles County Sheriff Alex Villanueva confirmed during a press conference that two students, a 16-year-old girl and a 14-year-old boy have died after the shooting. The Los Angeles County Sheriff's Department confirmed to The Hill that a suspect is in custody and was transferred to a local hospital.

We believe at this time that there is only one suspect but we are actively investigating and following all leads. — SCV Sheriff (@SCVSHERIFF) November 14, 2019

Villanueva said in the press conference that six people, between 14 and 16 years old (including the suspect), were taken to local hospitals. The suspect is in grave condition, he said.

BREAKING: Suspect in Santa Clarita school shooting is in the hospital in grave condition, officials say; suspect is a 16-year-old Asian male and student of the school. https://t.co/81af6Ktq9C pic.twitter.com/xRNWNG3qc4 — ABC News (@ABC) November 14, 2019

Schools in the William S. Hart Union High School District are no longer under lockdown, the school district announced in a tweet early Friday afternoon.

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The district confirmed in a statement that the shooting occurred before classes started.

"First and foremost — our hearts go out to the families of those affected by this terrible incident. Words are insufficient in times such as these," the statement reads.

First and foremost - our hearts go out to the families of those affected by this terrible incident. Words are insufficient in times such as these.

Nevertheless, we want to give you the facts we have available to us at this moment ... https://t.co/Q9xgo4RJXq — William S. Hart UHSD (@HartDistrict) November 14, 2019

Students evacuate after shooting at Saugus High School in Santa Clarita, California. https://t.co/D6PjO6Y4F7 pic.twitter.com/YD3iGA7Ol5 — NBC News (@NBCNews) November 14, 2019

The Los Angeles County Fire Department confirmed to The Hill earlier that several people were injured. It could not clarify if the victims were struck by gunfire, but said that several people were being transferred to local hospitals, including one via helicopter.

Authorities also locked down neighboring elementary schools and the Santa Clarita Valley Sheriff's Station urged residents near the high school to "PLEASE LOCK DOORS and stay inside."

If you live in neighborhoods anywhere near Saugus High, PLEASE LOCK DOORS and stay inside. If you see suspect, male dark clothing, in backyards, etc. CALL 911 — SCV Sheriff (@SCVSHERIFF) November 14, 2019

The White House said in a statement that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE is monitoring the situation.

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"President Trump is monitoring the ongoing reports of a school shooting in Santa Clarita, CA. The White House encourages all those in the area to follow the advice of local law enforcement and first responders," the White House said. California politicians also said they were monitoring the ongoing situation.

"My god, active shooter at my high school. 7 injured so far. Unsure if the suspect is caught yet. Praying for all... we have so many campaign interns and volunteers who go there," former Rep. Katie Hill Katherine (Katie) Lauren HillObama counsels NBA players on forming a social justice committee Republicans cast Trump as best choice for women House GOP campaign chairman insists party will win back majority MORE (D) tweeted.

My god, active shooter at my high school. 7 injured so far. Unsure if the suspect is caught yet. Praying for all... we have so many campaign interns and volunteers who go there. https://t.co/Z8di6oHNrj — Katie Hill (@KatieHill4CA) November 14, 2019

"Heartbroken and praying for Santa Clarita. I’m incredibly grateful to the first responders who are on the scene of this active situation. If you are near the area, please listen to law enforcement. Our children and communities are being terrorized. We can't accept this," Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D), a White House candidate who has made gun control a focal point of her presidential campaign, added.

Heartbroken and praying for Santa Clarita. I’m incredibly grateful to the first responders who are on the scene of this active situation. If you are near the area, please listen to law enforcement.



Our children and communities are being terrorized. We can't accept this. — Kamala Harris (@KamalaHarris) November 14, 2019

Fred Guttenberg, who lost his daughter in the shooting in Parkland, Fla., last year, called Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE (R-Ky.) to take up gun legislation that has stalled in the Senate.

"Dear Parents, please go home today and hug your children and tell them you love them. When you do this, imagine that this is the last time you will ever see them alive again," he tweeted. "Then demand @senatemajldr opens the Senate so that we can give your children a chance to live."

Dear Parents, please go home today and hug your children and tell them you love them. When you do this, imagine that this is the last time you will ever see them alive again. Then demand @senatemajldr opens the Senate so that we can give your children a chance to live. — Fred Guttenberg (@fred_guttenberg) November 14, 2019

Updated at 3:15 p.m.