Omar Mateen, 29, of Port St. Lucie, Florida, has been identified as the gunman who opened fire at Pulse nightclub in Orlando in what is now the worst mass shooting in U.S. history. (Courtesy: MySpace)

Orlando gunman buried in South Florida, document shows

The gunman who went on a rampage at a gay nightclub in Orlando, killing 49 people, has been buried in South Florida.