Alfonso Juan Calderon Jr., 24, was fatally shot on April 9, 2017, in the East Side neighborhood of Chicago. He was standing in a vacant lot in the 10700 block of South Green Bay Avenue when two males approached and fired multiple shots, striking him in the chest, arm, and hand. Calderon Jr. was taken to Christ Medical Center in Oak Lawn and pronounced dead at 9:07 p.m. that evening.

Investigators reported Calderon Jr. was a member of the Latin Kings, and that gang affiliation was a factor in the circumstances of his killing. In 2018 Alonza Horta, 23, of Hammond, Indiana, was indicted as part of a larger case against more than 30 alleged Latin Kings, and later received a 27-year prison sentence for his involvement in Calderon Jr.’s murder. The case formed part of a broader effort to address gang violence in the Chicago area.

If anyone knew Alfonso, saw activity in the 10700 block of South Green Bay Avenue that night, or has information about the shooting, please come forward.