Parkland, FL - Florida Gov. Rick Scott says he’ll sit down with state leaders and work on how they can make sure people with mental illness aren’t able to get guns.

Scott spoke Thursday a day after a shooting left 17 people dead at a high school. He said leaders will look at how they can make sure something like that never happens again.

FBI agent Rob Lasky says the FBI investigated a 2017 YouTube comment that said “I’m going to be a professional school shooter”; but the agency couldn’t identify the person making the comment.

Nineteen-year-old Nikolas Cruz has been charged with 17 counts of premeditated murder in the Wednesday afternoon shooting in Parkland, Florida.

As reactions poured in Thursday, President Donald Trump focused on the young man’s mental health, and Attorney General Jeff Sessions said he wants the Justice Department to study how mental illness and gun violence intersect, to better understand how law enforcement can better use existing laws to intervene before these school shootings happen.

“It cannot be denied that something dangerous and unhealthy is happening in our country,” Sessions told a group of sheriffs in Washington. In “every one of these cases, we’ve had advance indications and perhaps we haven’t been effective enough in intervening.”

Broward County Schools Superintendent Rob Runcie said “now is the time to have a real conversation about gun control legislation,” and said that if adults can’t manage that in their lifetimes, students will do it.

Broward County Sheriff Scott Israel called for giving law enforcement more power to detain people who make threats.

“What I’m asking our lawmakers to do is go back to places like Tallahassee and Washington, D.C., to give police the power,” the sheriff said, to detain people who make graphic threats or post disturbing material online, and bring them involuntarily to mental health professionals to be examined.

The sheriff also castigated people who he said are making copycat threats at other schools, warning that anyone caught will be fully prosecuted.

Fourteen wounded survivors were hospitalized as bodies of the slain were recovered from inside and around Marjory Stoneman Douglas High School. The slain included a school athletic director and another adult who worked as a monitor at the school. Runcie called them heroes.