From a gay news site:
“I recognize him from one of the apps,” said the Cord Cedeno, referencing Grindr. “But I instantly blocked him because he was very creepy in his messages. I blocked him immediately. Yeah, I recognize him off Grindr. The one of him in the tie.”
Cedeno said Omar Mateen had visited Pulse night club a number of times, and that his friends had seen the gunman on Grindr, Adam4Adam and Jack’d.
“One of them, he didn’t have his pictures up, but he would send them to guys,” said Cedeno. Not everyone blocked Mateen, though, according to this man's account.
“One of my friends, he doesn’t want to be spoken to on media. He said he knew this guy from back in 2007 where he’s been coming to Orlando,” he recalled. “He used to talk to him on the Adam4Adam app. Once he saw the guy’s picture on the news, he told his parents, he told his mom, and he’s like ‘I know this guy, I know this guy.’ And his mom is like, ‘No, you couldn’t have known him, you couldn’t have known him.’ And he was like, ‘No, I know this guy.’”
http://www.advocate.com/crime/2016/6/13/rumor-or-real-man-says-shooter-messaged-him-grindr
