Jaques St. John, a 25-year-old Black man, was found dead with multiple gunshot wounds in a Saint Louis residential neighborhood on March 18, 2018. Emergency responders were summoned but he was pronounced dead at the scene. Witnesses reported hearing gunfire and seeing a vehicle speed away, and investigators described the attack as appearing targeted.

The Saint Louis Metropolitan Police Department opened an extensive homicide investigation. Multiple people were interviewed early on with no immediate arrests. Forensic evidence later tied a suspect to the killing; that person was arrested and charged with first-degree murder. Prosecutors have emphasized the forensic links and witness accounts, while the defense has argued the evidence does not definitively connect their client to the shooting.

The community held vigils and memorials for St. John following his death. If anyone has information about the shooting or the vehicle seen leaving the scene, please come forward.