Michael Contreras, 30, was shot and killed on May 19, 2009, near Humboldt Park on Chicago’s West Side. The shooting happened around 1 a.m. as he walked down the street and two individuals approached and opened fire. The motive was not immediately clear and authorities sought information to help solve the case.

The killing came amid a wave of violence that year on the West Side, where multiple shootings—often tied to gang activity and other disputes—were affecting neighborhoods and driving up homicide totals. Friends and coworkers described Michael as kind and dedicated, and the community mourned another young life lost.

Does anyone who knew Michael or was in Humboldt Park that night have information that could help investigators?