Responsible for the mass murder of 49 individuals at the Pulse gay bar in Orlando, Florida, which at one point was the largest mass murder by a single gunman in American history. He injured more than 50 others and was allegedly affiliated with the terrorist group ISIS.
He was previously investigated by the FBI in 2013 and 2014.
He was shot dead by police officers at the scene of the crime at about 5:00 AM.
He was born to Afghan parents in New Hyde Park, New York. His father Mir Seddique Mateen hosted a TV show titled Durand Jirga Show. His second wife was Noor Salman.
Attorney General Loretta Lynch was one of many who commented on the 2016 American tragic act that Omar carried out.