GRAPHIC: Student SnapChats Shooting Inside School

At least 17 people were killed Wednesday in a high school shooting in Parkland, Florida, Broward County Sheriff Scott Israel said.

The suspect, 19-year-old former student Nikolas Cruz, is in custody, the sheriff said. Cruz was expelled for unspecified disciplinary reasons, and police are investigating his digital profile, Israel said. So far, what they've found is "very, very disturbing," he said."It's a horrific, horrific day," Israel said. "Just pray for this city. Pray for this school, the parents, the folks that lost their lives."

Watch this exclusive footage of a student recording the horrific moment when it all started. 

Again, viewers discretion is advised.

 

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