NEWS
02/15/2018 14:14 EST | Updated 02/15/2018 16:26 EST

Trump Says Florida Students Should Have Done More To Prevent Deadly Shooting

"So many signs that the Florida shooter was mentally disturbed," he tweeted Thursday.

President Donald Trump on Thursday responded to the massacre at a South Florida high school by suggesting students and the surrounding community could have done more to prevent the attack.

At least 17 people were killed and 15 injured after a troubled former student opened fire on Marjory Stoneman Douglas High School in Parkland, Florida, on Wednesday, police said. Nikolas Cruz, 19, had been expelled from the school the previous year for "disciplinary reasons," and many of his former classmates told media on Wednesday that he displayed problematic behavior.

"Honestly a lot of people a lot of people were saying it was going to be him," one student told CBS Miami. "We actually, a lot of kids threw jokes around like that, saying that he's the one to shoot up the school, but it turns out everyone predicted it. It's crazy."

A former teacher, Jim Gard, told the Miami Herald that Cruz reportedly wasn't allowed to carry a backpack on the school campus, and that "there were problems with him last year threatening students."

It wasn't like there wasn't concern for him.Boward County Mayor Beam Furr on Cruz

Contrary to Trump's tweet, it does appear that authorities were aware of Cruz's behavior before the attack. A former neighbor told The New York Times that Cruz's late mother called the police on her two sons on multiple occasions, though she stressed that she didn't think the boys were violent. Broward County Mayor Beam Furr told CNN that Cruz had been treated at a mental health clinic in the past and was somewhat on officials' radar.

"It wasn't like there wasn't concern for him," Furr said.

Trump's tweet failed to acknowledge the role that Florida's lax gun laws played in the shooting. Barring institutionalization, it's extremely difficult to keep someone with a history of mental illness from buying a gun in Florida. The accused killer legally purchased the AR-15-style rifle used in the slaughter, his family's attorney said.

The president also ignored the fact that he actually made it easier for people with mental health issues to buy guns by revoking an Obama-era gun regulation last year.