At least four people were reported dead and 11 injured in a “mass shooting” at a pizza restaurant in Florida during a video game contest that was being broadcast live on the internet.

Police warned public and media to stay away from Jacksonville Landing, a waterfront entertainment complex in the state capital, after at least one gunman opened fire.

Jacksonville Sheriff‘s Office tweeted yesterday afternoon: “Mass shooting at the Jacksonville Landing. Stay far away from the area. The area is not safe at this time. STAY AWAY.

“Multiple fatalities at the scene, many transported. #TheLandingMassShooting.”

Police said one suspect was dead at the scene. Police asked members of the public to remain inside while Swat teams searched the area, but later confirmed that there were no outstanding suspects.

Early reports said the gunman opened fire inside a pizza restaurant, where a sports video game tournament was taking place. Chicago Pizza was live-streaming the tournament for the ‘Madden NFL‘ football video game when at least 12 shots rang out, according to the video shared on social media.

In the video, players can be seen reacting to the gunfire and cries can be heard before the footage cuts off. Just before the shots were heard, a red laser dot appeared on the chest of one of the players, who was wearing white headphones and a red sweatshirt. SK Gaming, a professional online sports organisation based in Germany which sent a player to the event in Florida, said there was a shooting at the tournament.

“There was a shooting at the Madden tournament in Jacksonville. Our player is safe. Our thoughts are with everyone that had to be part of such a horrendous event. Stay strong, stay safe,” the organisation tweeted.

Sujeil Lopez was at home in Tampa Bay, Florida, when she got a call that her son Larry (25) had been shot, the ‘New York Times‘ reported.

“He was shot three times, once on the nipple, once on his hand and somewhere else,” she said. Her son is a professional video game player for the Bucks Gaming team, according to his Twitter profile.

Another gamer, Drini Gjoka, said on Twitter that a bullet struck him in a thumb.

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He tweeted: “The tourney just got shot up. I‘m leaving and never coming back. I am literally so lucky. The bullet hit my thumb. Worst day of my life. I will never take anything for granted ever again. Life can be cut short in a second.”

The incident came after another shooting in the city on Friday night in which a young man was killed and a teenage girl and boy were injured as they left a football game. (© Daily Telegraph, London)