Shooter Mateen became a person of interest to federal law enforcement in 2013 and again in 2014 before being identified as the gunman ...................................“He’s a known quantity,” the source said. “He’s been on the radar before.”
CNN stated that according to Homeland Sec. and local law enforcement officials,... Mateen “made a pledge of allegiance” to ISIS and had been “heard praying in a foreign language.”
According to accounts from the scene, the gunman traded gunfire with a police officer 'before' entering Pulse at 2 a.m.T
Texting from the bathroom by one of the hostages:
Mina Justice’s son Eddie was inside the club and texted her when the gunshots erupted, the Associated Press reports. Justice told his mom he and others ran into the bathroom to hide.
.....“He’s coming,” Justice texted, ......adding later: “He has us, and he’s in here with us.”......
“That was the last conversation,” his mother said.
http://www.thedailybeast.com/articles/2016/06/12/20-dead-in-attack-on-orlando-gay-club.html