Jacksonville Shooting: Livestream Captures Chilling Moment A Gunman Opened Fire

Three people, including the suspect, have been confirmed dead.

UPDATE: Three people were killed, including the suspect, after a gunman opened fire at an eSports tournament in Jacksonville, Florida, authorities have confirmed.

Another nine people were injured with gunshot wounds, and two people were injured fleeing the scene. Authorities say the number of injured may still rise as they gather data on people who self-transported to hospital.

Everyone injured is in a stable condition.

The suspect, a white male, is believed to have used a handgun to shoot others in the Madden tournament before turning the gun on himself.

Authorities believe the suspect was from Baltimore, Maryland, and was in town for the competition. The FBI is assisting with the investigation.

There are "multiple fatalities" after a mass shooting at an eSports tournament in Jacksonville, Florida, authorities have confirmed.

Local media reports that four people have been killed at 10 wounded at the Madden tournament.

The Jacksonville Sheriff's Office confirmed that the suspect, a white male, is now deceased. There are no other suspects.

Police barricade a street near Jacksonville Landing in Jacksonville, Florida. Photo: AAP.

Chilling footage of the moment the shooting broke out was captured on the event's livestream. Gunshots can be heard and yells cry out, moments before the game is interrupted by a "controller disconnected" message.

"Oh fuck, what are you shooting with?" cries one voice, before more shots.

One of the competitors, 19-year-old Drini Gjoka, tweeted that he was shot in his thumb.

"The tourney just got shot up," he said. "I'm leaving and never coming back. I am literally so lucky. The bullet hit my thumb. Worst day of my life."

Another competitor, Steven 'Steveyj' Javaruski, told the Los Angeles Times that the shooter was a gamer who was competing in the tournament and lost. This has yet to be confirmed by authorities.

"This isn't real man it just isn't," Javaruski tweeted. "Thank god I'm safe but I'm broken over this."

During the shooting people hid in various restaurants and other locked areas of The Landing shopping centre.

"We are finding many people in locked areas at The Landing," the Sheriff's Office tweeted.

"We ask you to stay calm, stay where you are hiding. SWAT is doing a methodical search inside The Landing. We will get to you. Please don't come running out."

Authorities are also urging anyone with information, including additional footage, to come forward.

EA, which owns Madden, tweeted: "This is a horrible situation, and our deepest sympathies go out to all involved."

Many within the eSports gaming community are calling for prayers.

Florida has some of the weakest gun laws in the country.

The gun control group March For Our Lives, started by survivors of the Parkland, Florida shooting, reiterated its call to end gun violence.

"As another mass shooting plagues our home state of Florida, we continue to come together in the face of daily tragedy in order to prevent the trauma that has become too normal in our nation," it said.

"Bullets do not discriminate -- whether on our streets, in our schools, or at our video game tournaments. Gun violence takes many forms and we must perpetuate the necessary conversations in order to bring peace to our violent nation

"Jacksonville, we are with you. Before, now, and always."