Ricardo Alcantar, 18, was shot on the evening of July 5, 2012, on Chicago’s Southwest Side in the Archer Heights neighborhood. The attack occurred about 5:05 p.m. in the 4800 block of South Hamlin Avenue; he was taken to Advocate Christ Medical Center in Oak Lawn and pronounced dead on arrival.

The killing occurred amid a cluster of shootings over the Independence Day period that included multiple victims across the city.

Does anyone who was in Archer Heights that evening or who has information about activity on South Hamlin Avenue remember anything that could help investigators?