The FBI is investigating reports that the Orlando gunman lived a down low bisexual lifestyle.
Armed with a modified assault rifle, Omar Mateen, shot 102 people at gay nightclub Pulse in Orlando early Sunday. 49 people died in Mateen's homophobic rampage.
One victim said Mateen laughed as he stepped over bodies on the dance floor.
Mateen, 29, was killed when a SWAT team drove an armored vehicle through a back wall of the club and engaged him in a furious gunfight.
In an interview from her Boulder, Colorado home, Mateen's ex-wife, Sitora Yusify, claims he had "gay tendencies" and he frequented gay bars.
Yusufiy, who was married to Mateen for 3 months in 2009, made the statements in an interview with Brazilian television station SBT Brazil.
Her fiancé, Marco Dias, who translating her words in Portuguese, said Yusofiy witnessed Mateen's father call him a homosexual in front of her.
Dias said “the FBI asked her not to tell this to the American media.”
Former classmates in Orlando say Mateen was gay and often visited gay bars with them.
Others report he was a regular visitor to Pulse Nightclub and he may have staked out other gay bars before the mass shooting.
The former classmate, who asked to remain anonymous, said he met Mateen at Indian River Community College police academy in 2006 -- and Mateen asked him out "romantically."
We went to a few gay bars with him, and I was not out at the time, so I declined his offer,” the former classmate told the Palm Beach Post.
Another man said he communicated regularly with Mateen on the gay dating app Jack'd. He said he saw Mateen while crossing the street outside Pulse an hour before the rampage.
“He was very creepy in his messages, and I blocked him immediately,” the man said.