Nicholas Sion Robinson, a 28-year-old African American man, was fatally shot on February 22, 2016, in Chicago’s South Shore neighborhood. Reports say he was struck multiple times in what investigators described as a targeted attack. No arrests have been made and no suspects have been identified.

Family and community members held vigils and marches calling for justice while the Chicago Police Department continued an open investigation. Investigators have faced difficulty advancing the case because of a lack of witnesses and concrete evidence.

Who in the South Shore area on February 22, 2016, might have seen or heard something that could help determine what happened to Nicholas?