Tina Harrison-Diaz, 46, of Peoria, Illinois, was found dead on the night of December 23, 2018, suffering multiple gunshot wounds to her upper body. The Peoria County Coroner, Jamie Harwood, ruled the death a homicide.

Authorities opened a homicide investigation immediately after her body was discovered. Investigators gathered evidence and conducted interviews, but no immediate arrests were made and no suspect was named in the initial investigation. The case has remained open and investigators asked anyone with information to come forward.

Who knew Tina or was in the area of Peoria on the night of December 23, 2018, and might have information that could help investigators?