On March 17, 2019, Richard Kladky, a 35-year-old white man, was shot outside a St. Louis residence he had moved into earlier that day. He had left a previous shared living situation to escape rising tensions, but the dispute followed him. Witnesses said a white sedan arrived that evening and its driver, 19-year-old Collin Aubuchon, got out and opened fire. Kladky ran but was struck by five gunshots and died at the scene before emergency responders could save him.

Investigators tied the confrontation to an ongoing personal dispute dating back to when both men lived in the same sober living facility; prosecutors say the animosity began after flirtatious text messages Aubuchon exchanged with Kladky’s wife. Reports say Aubuchon used GPS to locate Kladky at the new address and surrendered minutes after the shooting to a private security officer nearby. Prosecutors charged him with first-degree murder and armed criminal action. Anyone with information about Kladky, the shooting, or the events leading up to that night is asked to come forward.