On April 20, 1920 Officers Ula A. McMahan and Henry Harris were walking south on Main Street when they heard the sound of shots being fired. They ran to Missouri Avenue, where a saloon at 6 West Missouri Avenue was being held up. By the time the officers arrived, the robber had fatally wounded Kirk Tate, the part-owner of the saloon. McMahan spotted the robber in the doorway, and was immediately shot by him. McMahan managed to return fire before collapsing. Harris shot at the robber, but the man escaped. Half an hour later the suspect, John Moore, was arrested after a fight with four patrolmen.