Orlando Shooter Called 911, Pledged Allegiance To Leader Of ISIS

MSNBC is reporting that Omar Mateen, the gunman who opened fire at a gay nightclub in Florida, had called 911 moments before to pledge allegiance to the leader of ISIS.

Mateen appeared to be a follower of ISIS propaganda and referenced the Tsarnaev brothers, who carried out the Boston Marathon bombings in 2013, at the scene, sources said.

But as investigators try to determine the radicalization that apparently motivated Mateen to attack the Pulse Nightclub in Orlando, his family believes he was pushed over the edge by pure hate against the LGBT community.