(Reuters) – A gunman killed four people and wounded several others on Sunday when he opened fire at a video game tournament that was being streamed online from a restaurant in Jacksonville, Florida, police and local media said.

Jacksonville Sheriff Mike Williams said one white male suspect was dead at the scene. He declined to comment on what led to the third major mass shooting to hit Florida in the last two years.

Dozens of ambulances and police cars flooded into The Jacksonville Landing, a waterfront dining, entertainment and shopping site in the city’s downtown, after several shots rang out on a sunny Sunday afternoon.

The shooting took place during a regional qualifier for the Madden 19 online game tournament at the GLHF Game Bar inside a Chicago Pizza restaurant, according to the venue’s website.

The bar was livestreaming the competition when the gunfire started, according to video of the stream shared on social media. In the video, players can be seen reacting to the shots and cries can be heard before the footage cuts off.

One Twitter user, Drini Gjoka, said he was taking part in the tournament and was shot in the thumb.

“Worst day of my life,” Gjoka wrote on Twitter. “I will never take anything for granted ever again. Life can be cut short in a second.”

The Los Angeles Times reported the shooter was a gamer who was competing in the tournament and lost. Citing messages from another player in the room, the Times said the gunman appeared to target several victims before killing himself. Reuters could not immediately confirm that account of events.

The Florida shooting occurs amid a debate about U.S. gun laws that was given fresh impetus by the massacre in February of 17 people at a high school in Parkland, Florida.