“The FBI investigated and attempted to trap eventual Orlando shooter Omar Mateen after a 2013 incident in which he allegedly threatened to kill a deputy. According to the Vero Beach Press Journal, the St. Lucie County Sheriff’s Office requested Mateen—then working as a security guard—be removed from his patrol of the St. Lucie County Courthouse after he threatened to have al Qaeda kill a deputy and his family. He also allegedly made ‘very disturbing comments about women and… Jews and then went on to say that the Fort Hood shooter was justified in his actions,’ said Sheriff Ken Mascara.”
Source: FBI Tried and Failed to ‘Lure’ Omar Mateen – The Daily Beast