Omar Mateen has been named as the shooter in the Orlando Pulse Nightclub terror attack.
Mateen, 29, is a U.S. citizen from Port St. Lucie, Florida, according to CBS News.
FBI says the gunman may have "leanings to radical Islamic terrorism" and it is being investigated as "an act of terrorism."
"Local FBI Assistant Special Agent-in-Charge Ron Hopper said at the press conference that there are “suggestions” the gunman “may have leanings” toward Jihadist ideology. Hopper had been asked about whether the shooter was connected to radical Islamic terrorism."
Mateen shot more than 40 people in the attack, killing about 20, and took party-goers hostage before being killed by police.
According to the UK Daily Mail:
"The suspect exchanged gunfire with an officer working at the club around 2am, then went back inside and took hostages among more than 300 people inside.
During the gunfire, an officer was shot, but he was saved by his helmet, and the gunman was killed. It was thought that at least one hostage had been locked in a bathroom with gunshot wounds."
At around 6;00 AM EDT local time police tweeted: 'Pulse Shooting: The shooter inside the club is dead.'