Devin C. Dyer was 17 when he was shot and killed on March 5, 2011, at a party on the third floor of an apartment at 5941 W. Thomas in Chicago’s Austin neighborhood. The shooting followed an altercation shortly before midnight over a DJ’s music; the lights were cut and a gunman who reportedly aimed at the DJ instead struck Devin in the face and wounded three others. Devin was taken to a nearby hospital and pronounced dead soon after.

Authorities and the family describe the shooting as tied to ongoing tensions, though Devin had no known gang affiliations and is believed to have been an unintended victim. More than 100 people were at the party but no witnesses have come forward with identifying information. Devin’s parents have offered a $10,000 reward and say community fear of retaliation has hampered the investigation. A memorial has been erected, but the family emphasizes they need information that leads to an arrest.

If anyone was at that party or has information about the shooting, please share what is known with investigators.