FORT WORTH, Texas — A man was killed in south Fort Worth early Sunday morning after a shooting broke out at a large gathering, police said. Shortly after midnight, officers were dispatched in reference to a shooting call. Officers found an adult male victim who was dead at the scene. The man had sustained at least one gunshot wound, police said. Detectives learned that there was a large gathering near the location when an unknown suspect or suspects began firing. The victim was struck as he and others attempted to flee the area on foot, police said. The Tarrant County Medical Examiner’s Office…