Marquise Aldridge, a 23-year-old Black man from the 1300 block of Academy Avenue in St. Louis, was shot and killed on December 11, 2020, inside an apartment in the 9800 block of Lilac Drive in Riverview. Officers arrived about 5:29 p.m. and found two people with gunshot wounds; Aldridge was pronounced dead at the scene and an adult woman was taken to hospital with injuries described as not life-threatening.

The Riverview Police Department initially responded, then asked the St. Louis County Police Department to take the lead. The county’s Bureau of Crimes Against Persons handled the investigation, conducting witness interviews and evidence work. No suspect was publicly identified and no arrest was announced in the initial reports. Investigators asked anyone with information to contact St. Louis County detectives or submit tips through CrimeStoppers.