Michael C. Brock, 24, was found dead January 10, 2015, in an alley on South Ottawa Street in Joliet. Authorities first treated the death as a hit-and-run, but later evidence showed Brock had been shot once before being struck by a car, and the investigation was reclassified as a homicide.

Brock’s death occurred around the same time his girlfriend, Chinesicia Hill-King, also 24, went missing; her bullet-riddled body was later found in a ditch on Zurich Road. Police believe Hill-King’s car was used to run over Brock, but it is unclear what role, if any, she played in his killing. The couple had been living with Joan Watkins, who described their relationship as tumultuous and involving drug use and theft.

No arrests have been announced and investigators cite a lack of witnesses and concrete evidence. Does anyone have information about Brock, Hill-King, the vehicle involved, or that neighborhood in early January 2015?