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UPDATE 10:25am: Officials say there are 50 confirmed dead and 53 hospitalized after a shooting at an Orlando nightclub.

According to Peter Doocy, many of those wounded are in critical condition.

Omar Mateen, 29, has been identified as the gunman in the mass shooting, which is the deadliest in U.S. history.

Mateen was killed at the scene by law enforcement.

Following a mass shooting at an Orlando nightclub that left "around" 20 people dead and 42 wounded, authorities are eyeing a connection between the gunman and radical Islamic terrorism.

At a news conference this morning, Fox News' Peter Doocy asked the FBI officer in charge of the investigation if the gunman - who was killed in a shootout with police - had ties to radical Islam.

"We do have suggestions that that individual may have leanings toward that particular ideology," FBI Assistant Special Agent-in-Charge Ron Hopper said. "But right now we can't say definitively, so we're still running everything to ground."

FoxNews.com reported:

[Orlando Police Chief John] Mina said officers were called to Pulse Orlando, a popular gay nightclub, at around 2 a.m. after reports of a shooting. He said officers were engaged in a gun battle outside the club before the suspect went back into the building where more shots were fired. He said the gunman then took several hostages. About three hours later, Mina said officials made the decision to rescue the hostages in the club. He said SWAT officers exchanged fire with the gunman and killed him. Mina said the suspect was found with some kind of assault rifle on the suspect along with a handgun and some kind of device on him. Officials stopped short of saying it was a bomb and were still investigating whether it was something real or a hoax device.

Watch more on the ongoing investigation below.

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