Michael Harrison, 35, was shot and killed on January 9, 2015, after an argument at a barber shop in West Garfield Park, Chicago. The confrontation began when a man accused Harrison and a friend of stealing drugs. The accuser and others returned armed; Harrison was shot in the abdomen and died at John H. Stroger Jr. Hospital of Cook County shortly after midnight. A 31-year-old friend was wounded but survived.

Police arrested 22-year-old Dominique Brown after officers saw him fleeing the scene. Brown dropped a .40-caliber handgun during the pursuit; the recovered gun matched shell casings from the scene. Surveillance footage captured the shooting, gunshot residue was found on Brown’s hands and clothing, and he provided a videotaped confession admitting involvement. Brown was charged with first-degree murder and held on $2 million bond. Investigators continued seeking the other participants in the ambush.

If anyone knew Michael, his movements that night, or can identify the other people involved, please share what is known.