“This has been going on too long in our country, too many years, too many decades now,” Trump said during a prison reform event at the White House, hours after the attack occurred.

“My administration is determined to do everything in our power to protect our students, secure our schools and to keep weapons out of the hands of those who pose a threat to themselves and to others,” he added.

Multiple deaths have been reported in the shooting at Santa Fe High School in southeast Texas. The school district said in a statement that the situation has been “contained.”

As the news broke, the president tweeted: “Early reports not looking good. God bless all!”