ISIS takes credit for Orlando shooting
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The Islamic State in Iraq and Syria (ISIS) claimed responsibility Sunday for a deadly nightclub shooting in Orlando, Fla., that left 50 dead and 53 injured. 

"The attack that targeted a nightclub for homosexuals in Orlando, Florida and that left more than 100 dead and wounded was carried out by an Islamic State fighter," ISIS said in a statement. 

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The organization offered no proof for the attacks. 

 

 

Speaking to reporters on the scene shortly before 3 p.m., Florida Sen. Bill NelsonBill NelsonGore wishes Mikulski a happy birthday at 'Inconvenient Sequel' premiere Honda recalls 1.2 million cars over battery fires Vulnerable senators raise big money ahead of 2018 MORE (D) said ISIS had accepted responsibility for the shooting. But he said it had not been confirmed by the FBI.

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“In this case, if we’re getting those kind of statements from the news agency of the Islamic State, we’ll have to see what those connections are.”  

Florida Sen. Marco RubioMarco RubioBush ethics lawyer: Congress must tell Trump not to fire Mueller The private alternative to the National Flood Insurance Program  Cruz offers bill to weaken labor board's power MORE (R) also referenced the United States’s ongoing fight against terrorism but said the FBI would have more information about possible connections to terrorism. 

Fifty people were killed and 53 others were injured early Sunday morning when a gunman opened fire inside the Pulse nightclub in the deadliest mass shooting in U.S. history.

Federal law enforcement officials say the gunman was Omar Mateen, a 29-year-old American citizen living in Port St. Lucie, Fla. He was killed at the scene in a shootout with police.

He was reportedly armed with an AR-15-style assault rifle and a handgun.

News networks reported Mateen phoned 911 moments before the shooting to pledge allegiance to ISIS.

It remains unclear if the planning and execution of the attack were directly linked to foreign terrorist groups.

President Obama Sunday called the shooting an "act of terror" but didn't place blame on the terror group.