Nikolas Cruz: Killed 17 in mass shooting at a high school in Parkland, Florida

17 people were killed and another 14 were wounded.Suspect identified as Nikolas Cruz, who has been charged with 17 counts of premeditated murderCruz, 19, was believed to have used an AR-15 style semiautomatic rifle.A YouTube user named "Nikolas Cruz" reportedly posted "I'm going to be a professional school shooter" on the site.​