Authorities say two teenage boy are being charged in juvenile court with second-degree assault and first-degree riot. The fatal fight broke out between two opposing groups on a party bus in Inver Grove Heights early Saturday. The fighting began as they were getting off the bus in a movie theater parking lot. Gun shots were then fired killing Nineteen-year-old Billy Ray Nobles. A 16-year-old was also wounded. The Dakota County Attorney’s Office says which teen had fired the fatal shot has not been determined. Murder charges could follow.