Corey Exum

Police said the victim, Corey Exum, 46, of St. Louis County, was found by officers Aug. 24. He had been shot behind a building in the 5000 block of Goodfellow Boulevard. Exum died at the scene. Police have not provided a motive for the killing. A juvenile, whose name was not released, was arrested and in juvenile custody on a charge of first-degree murder.