50 killed in US gay bar mass shooting

Orlando, Florida (CNN) --An American-born man who'd pledged allegiance to ISIS gunned down 50 people early Sunday at a gay nightclub in Orlando, the deadliest mass shooting in the United States and the nation's worst terror attack since 9/11, authorities said. * The gunman, Omar Mateen, 29, of Fort Pierce, Florida, was interviewed by the FBI in 2013 and 2014 but was not found to be a threat, the FBI said. * Mateen called 911 during the attack to pledge allegiance to ISIS and mentioned the Boston Marathon bombers, according to a U.S. official. * Orlando police shot and killed Mateen. Mateen carried an assault rifle and a pistol into the packed Pulse club about 2 a.m. Sunday and started shooting, killing 50 people and wounding at least 53, police said. After a standoff of about three hours, while people trapped inside the club desperately called and messaged friends and relatives, police crashed into the building with an armored vehicle and stun grenadesand killed Mateen. It appears he was organized and well-prepared, Orlando Police Chief John Mina said early Sunday. Authorities said they haven't found any accomplices. 'An act of hate' There has been no claim of responsibility for the attack on jihadi forums, but ISIS sympathizers have reacted by praising the attack on pro-Islamic State forums. We know enough to say this was an act of terror and act of hate, President Obama said in an address to the nation from the White House. While the violence could have hit any American community, This is an especially heartbreaking day for our friends who are lesbian, gay, bisexual or transgender, he said. Omar Mir Seddique Mateen was born in 1986 in New York. Most recently he lived in Fort Pierce, about 120 miles southeast of Orlando. Fearing explosives, police evacuated about 200 people from the apartment complex where he lived while they looked through his residence for evidence. Omar Mir Seddique Mateen and//i2.cdn.turner.com/cnnnext/dam/assets/160612122351-orlando-nightclub-shooter-omar-mateen-photo-tapper-00000301-medium-plus-169.jpg Omar Mir Seddique Mateen He was married in 2009 to a woman originally from Uzbekistan, according to the marriage license, but he filed documents to end the marriage in 2011.Mateen had worked since 2007 and//money.cnn.com/2016/06/12/news/companies/orlando-shooter-employer/index.html?section=money_latest as a security officer at G4S Secure Solutions , one of the world's largest private security companies. Mateen's parents, who are from Afghanistan, said he'd expressed outrage after seeing two men kiss in Miami, but they didn't consider him particularly religious and didn't know of any connection he had to ISIS. A message posted in Arabic on a dark web site associated with the ISIS news agency Amaq said the armed attack that targeted a gay night club in the city of Orlando in the American state of Florida and that bore more than a 100 killed and wounded was carried out by an Islamic state fighter. But CNN's Salma Abdulaziz, who translated the message and closely monitors ISIS messaging, cautioned about taking the message at face value. She said the language is inconsistent with previous ISIS announcements and that the Arabic word for gay was used rather than an epithet normally used by ISIS. Also, there was no claim that the attack was directed, just an after-the-fact claim the gunman was an ISIS fighter, she said.