UPDATE: Multiple fatalities in Florida mass shooting

Police have cordoned off the area of a mass shooting in Jacksonville, Florida.

Police have cordoned off the area of a mass shooting in Jacksonville, Florida.

Twitter

* Editor's note: This is a developing story. We will bring you updates as more information becomes available.

FLORIDA - There was a mass shooting at a video game tournament that was being streamed online from a restaurant in Jacksonville Landing, Florida, on Sunday.

Local media, citing police sources, said four people were killed and about 10 wounded.

The sheriff's office said one suspect was dead at the scene and that it was unknown whether there was a second suspect.

"Searches are being conducted," the sheriff's office said.

Earlier, the sheriff advised the public to stay away from the area.

The shooting took place at a restaurant at Jacksonville Landing, a waterfront dining, entertainment and shopping site in downtown Jacksonville, according to local media.

The business was live streaming a tournament for a Madden football video game when several shots rang out, according to video of the stream 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.

Local outlet News4Jax said several ambulances, as well as firefighters and police officers, were on the scene, and that roads were being blocked off in the downtown area.