Mario Purantez Washington was 25 when he was shot and killed in St. Louis on August 31, 2014. Officers responding that night found him with multiple gunshot wounds; he was pronounced dead shortly after emergency medical personnel arrived.

The St. Louis Metropolitan Police Department opened an investigation, but the case remains unsolved. Family and loved ones have continued to press for answers while authorities have appealed to the public for information. Tips can be submitted anonymously to St. Louis Regional Crime Stoppers as investigators seek to identify whoever was responsible.

If anyone knew Mario, saw activity in the neighborhood that night, or has information that could help, please contact Crime Stoppers.