ISIS claims responsibility for America's most deadly mass shooting: Terror group celebrates their New York-born 'fighter' Omar Mateen, 29, who died in Orlando gay club after killing 50

Daily Mail：
Worst mass shooting in US history: 'Islamic extremist' Omar Mateen, 29, from Florida, shoots dead at least 50 at Florida gay club

• WARNING: GRAPHIC CONTENT
• US citizen Omar Mateen, 29, opened fire inside Pulse gay club in Orlando in the early hours of Sunday morning
• Mateen, from Port St. Lucie in Florida, killed at least 50 people, injured 53 and took about 100 party-goers hostage
• Police used an explosive device to distract the gunman and rescued around 30 people who had been taken hostage
• Officers engaged in gunfire with the man and an officer was shot in the head, but he was saved by his helmet
• Mateen was eventually shot dead by officers shortly after 5am - three hours after the massacre began
• Shooter had an associates degree in criminal justice and worked as a security guard with a company called G4S
• Mateen was a 'known quantity' to the FBI and was investigated twice before the mass shooting
• See more of the latest news on the Orlando shooting at Pulse gay club as gunman shoots at least 50 dead

By JENNY STANTON FOR DAILYMAIL.COM and MATT HUNTER FOR MAILONLINE and JOSE LAMBIET IN FORT PIERCE, FLORIDA FOR DAILYMAIL.COM
PUBLISHED: 08:08 GMT, 12 June 2016 | UPDATED: 01:18 GMT, 13 June 2016


ISIS claims responsibility for massacre of 50 in Orlando gay club
The nightclub told revellers to 'keep on running' as the man took hostages…
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http://www.dailymail.co.uk/news/article-3637414/Everyone-running-Gunman-bursts-gay-nightclub-Florida-shoots-20-people-taking-hostages.html