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The gunman who shot and killed at least 50 people and wounded dozens more early this morning has been identified as Omar Mateen, 29.

Rep. Alan Grayson said during a Sunday morning press conference that Mateen lived in Florida and was a U.S. citizen, born in the U.S. to parents of Afghan origin.

Mateen was killed in a gun battle with officers around 5 a.m., officials said.

"More likely than not that it was an ideologically motivated attack," Grayson said. "It's not a coincidence the attack took place where it did and when it did."

“It appears he was organized and well-prepared,” Orlando Police Chief John Mina said earlier this morning at a news conference, noting that Mateen had an “assault-type” weapon and a handgun.

FoxNews.com reported:

The shooting in Orlando at Pulse, which bills itself as "the hottest gay bar" in the city and was packed with more than 300 people, was reported minutes after 2 a.m. Sunday. In addition to those killed inside the club, at least 53 people were taken to area hospitals. Dozens of party-goers remained hostages in the club for several hours after the initial shooting, prompting SWAT teams to rush inside. Shortly after 6 a.m. local time, Orlando police tweeted that the gunman had been killed.

Watch a news conference with law enforcement and local officials below.

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