Orlando night club shooting

Surveillance cameras show a suspect approaching the Islamic Center of Fort Pierce moments before Monday morning's blaze, fire officials said.

The fire may have been timed to coincide with the Muslim holiday of Eid al-Adha and the anniversary of 9/11.

Omar Mateen committed the worst mass shooting in modern American history in June when he opened fire in Pulse.

He was killed by police after taking hostages and declaring his allegiance to the Islamic State group.

Gunman Omar Mateen — a New York-born Florida resident and US citizen who was the son of Afghan immigrants — was shot and killed by police early on Sunday morning after a three-hour siege, in which 49 people were killed.

Omar Mateen is the person who authorities say killed at least 50 people in a massacre at an Orlando nightclubearly Sunday.

The 29-year-old, who died in a shootout with police, lived in Fort Pierce, Florida. Bomb squad teams, FBI agents and police combed his apartment there for hours on Sunday. Investigators haven't revealed what they found.

Terrified survivors — who moments before were laughing and dancing with friends — described how the gunman raked the club with bullets, prompting a police SWAT team to storm the venue.

"We have cleared the building, and it is with great sadness that I share we have not 20, but 50 casualties in addition to the shooter," Mayor Buddy Dyer told a mid-morning news briefing in Orlando, more than doubling the previously given death toll.

"There are another 53 that are hospitalised."