Deadly mass shooting at video game tournament in Florida

A mass shooting at a video game tournament has led to "multiple fatalities" in the US state of Florida, according to police. The shooting took place on Sunday at a waterfront dining, entertainment and shopping site in downtown Jacksonville, according to local media. Police warned residents to stay away from the area. Citing police sources, reports said four people were killed and 15 wounded. "One suspect is dead at the scene, unknown at this time if we have a second suspect. Searches are being conducted," the Jacksonville Sheriff's Office said on Twitter.