Between eight and 10 people have been killed in a high school shooting in Texas, most of them students, according to police.
Officers said two people believed to be students have been detained after the incident at Santa Fe High School, about 30 miles south east of Houston.
Harris County Sheriff Ed Gonzalez said a police officer was injured but the extent of the officer’s injuries is unknown.
Vice president Mike Pence said he and President Donald Trump have been briefed on the shooting.
School shooting in Texas. Early reports not looking good. God bless all!— Donald J. Trump (@realDonaldTrump) May 18, 2018
He said the students, families, teachers and all those affected should know: “We’re with you. You’re in our prayers and I know you are in the prayers of the American people.”
Mr Trump added in a tweet: “Early reports not looking good. God bless all!”
First lady Melania Trump tweeted: “My heart goes out to Santa Fe and all of Texas today.”