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FORT PIERCE, Fla.—He was a body builder and a security guard, a religious man who attended the local mosque and wanted to become a police officer.
Early Sunday, 29-year-old Omar Mateen opened fire at a gay nightclub in Orlando. Police said 49 victims died and 53 were wounded. Mateen also was killed.
Mateen was the son of an Afghan immigrant who had a talk show in the United States, the nature of which was not entirely clear: A former Afghan official said the program was pro-Taliban and a former colleague said it was enthusiastically pro-American.

FBI agents investigate the damaged rear wall of the gay nightclub Pulse, where Omar Mateen allegedly killed at least 50 people in Orlando, Fla., on June 12, 2016. Joe Raedle/Getty Images