Upon investigation, authorities determined that the student was wearing a weighted athletic training vest and did not possess any weapons or explosives. "It was determined that the student was ...
Police also found nails - presumably to serve as shrapnel - and other raw materials for making explosive vests at the residence, according to The Chicago Tribune. The key explosive ingredient ...
During the course of the shootout and subsequent standoff, Mateen told police negotiators that he planned to put explosive vests on four hostages and place them in corners of the nightclub ...