'I Did the Shooting': Orlando Nightclub Massacre 911 Calls Revealed

Omar Mateen refers to "homeboy" Tamerlan Tsarnaev, one of the Boston bombers.

The three calls between Mateen and the police negotiator unfold over a period of 50 minutes, beginning with the first call at 2:35 a.m. In their last conversation at 3:25 a.m., the negotiator tells Mateen to come outside without any weapons, but Mateen doesn't reply.