Global News at Noon Toronto February 15 2018 12:19pm 02:17 Florida school shooter was under investigation by FBI in 2017 Authorities say 17 people were killed and 15 were wounded in what is being called the worst mass school shooting in the U.S. in five years. Marianne Dimain has more. Republic of Florida militia says school shooting suspect was one of their own. Who are they? Florida school shooting suspect Nikolas Cruz charged with 17 counts of premeditated murder Responsive site?