Ivan Gutierrez-Gamino was 19 when he was shot and killed on June 11, 2017, in Chicago’s Back of the Yards neighborhood. Police say he was walking near the 4500 block of South Ashland Avenue when someone approached and opened fire, striking him multiple times; he was pronounced dead shortly afterward.

The killing occurred during a particularly violent year for the city, which recorded more than 600 homicides in 2017. The neighborhood has experienced frequent episodes of gun violence tied largely to gang activity, and this death was described as part of a broader pattern in which young people were disproportionately affected by retaliatory and gang-related shootings.

Does anyone who was in the Back of the Yards on June 11, 2017, or who knew Ivan, have information that could help clarify what happened?