On the rainy morning of Sunday, November 30, 2014, officers in Columbia, Missouri, responded to the 1400 block of Illinois Avenue after reports of gunfire. First responders found two people struck by gunshots; Rickie Allen Dunn, 40, was critically injured and was pronounced dead shortly after arrival at a local hospital. An 18-year-old also was wounded and survived.

Family and witness accounts say Dunn had gone to check on his daughter at a nearby gathering. A verbal confrontation began when a man directed derogatory language at a female companion of Dunn’s. Dunn, described by loved ones as a peacemaker, intervened and a fight followed that left the instigator unconscious. According to those accounts, a different person then approached with a firearm and fired into the crowd, hitting Dunn and the younger victim.

Investigators have treated the death as a homicide but no suspects have been publicly identified and no arrests have been announced; the investigation grew cold and appeals to Crime Stoppers and the public have been used to seek new leads. If anyone was at the scene or has information about who fired the shots, will you come forward to help the family and detectives?