Orlando nightclub killer Omar Mateen had expressed sympathy for a variety of Islamist extremists, including groups in the Middle East that are sworn enemies, the FBI said on Monday, as a picture began to emerge of the angry, violent man who carried out America's deadliest mass shooting.
Reuters: Orlando killer expressed support for multiple Islamist groups
Hundreds attend a rally and vigil for the shootings in Orlando at Los Angeles City Hall on June 13, 2016 in Los Angeles, California organized by the Los Angeles LGBT Center.
