On May 8, 2019, 40-year-old Gabriel Martin, a Black man from Florissant, was shot and killed on Lexington Avenue just south of Fairground Park in St. Louis, Missouri. Martin sustained multiple gunshot wounds and was found at the scene; the shooting prompted a homicide investigation by the St. Louis Metropolitan Police Department.

Investigators reported little eyewitness cooperation and limited physical evidence at the scene, which hindered efforts to reconstruct the sequence of events or determine a clear motive. No suspects have been publicly identified and no arrests have been announced; the case has gone cold and remains unsolved. Family and friends have held vigils in his memory while police continue to seek information.

If anyone saw activity on Lexington Avenue near Fairground Park around May 8, 2019, or has information that could help, please come forward.