Dequarius Cannon was 17 when he was shot and killed during an attempted robbery on the night of October 24, 2009, in Chicago’s Washington Heights neighborhood. He was sitting in the driver’s seat at 105th and Peoria Streets when someone approached the vehicle demanding valuables; the encounter escalated and Cannon was shot in the head. The passenger then drove the car to Cannon’s home on South Green Street, where help was summoned. Cannon was pronounced dead shortly after midnight. Detectives were investigating the case.

Does anyone who was in Washington Heights that night or who knew Dequarius or the people with him have information that could help investigators?