Downer was shot twice in 1986 - in the 700 block of N. Carey St. in June, and the 3900 block of W. Northern Parkway in September. He died on June 11, 2019. His death has been ruled a complication from his shooting injuries 33 years earlier.
Reminder: Police disclosures of homicide information are almost always limited to the block level. Markers in fine-detail or street-level zooms are likely to imply precision that is not actually present.