From Wikipedia:
Omar Mir Seddique Mateen(November 16, 1986 – June 12, 2016)[41]lived about 100 miles (160 kilometers) from Orlando. Mateen was an American citizen born in New York to Afghanparents, and was a Muslim.[42][43] He attended Martin County High School for at least one year and reportedly held two degrees in science from Indian River State College, received in 2006 and 2007.[44] According to Florida Department of Law Enforcementrecords, he had no criminal record in Florida.[44] Mateen lived in Fort Pierce, Florida, but received mail at his parents' home in nearby Port St. Lucie.[44]
He had worked for the security firm G4Sin Jupiter, Florida, since 2007.[45][46][47]He held an active firearms license and a security guard license.[47][48]
Mateen married an Uzbekistan-born wife in April 2009; they divorced in July 2011.[49][44] Following the nightclub attack, Mateen's ex-wife told the media that during their marriage, Mateen was mentally unstable and beat her.[50] He reportedly remarried and had a three-year old son.[51]
Mateen became a person of interest to the FBI in 2013 and 2014.[47] A 2013 investigation was opened after Mateen made "inflammatory" comments to co-workers and the 2014 investigation was opened after Mateen "was linked to another U.S. radical who became a suicide bomber in Syria."[47] Mateen was interviewed three times in connection with the investigations, which were both closed after producing nothing that appeared to warrant further investigation.[52]
U.S. Representative Adam Schiff, the ranking Democratic member of the House Intelligence Committee, said the Department of Homeland Securityinformed him Mateen had pledged allegiance to the Islamic State of Iraq and the Levant (ISIL).[53] NBC News, citing "law enforcement sources", reported that Mateen called 9-1-1 and pledged allegiance to ISIL leader Abu Bakr al-Baghdadi just before the incident.[54] According to officials, during the 9-1-1 call, Mateen also referred to Tamerlan and Dzhokhar Tsarnaev, the Boston Marathon bombers.[47]
Mateen's father was quoted as saying that he had seen his son get angry after seeing a gay couple kissing at a festival marketplace in Miami months prior to the attack, which he suggested might be a motivating factor.[55][56]
