On October 18, 2017, 48-year-old Seretse Robinson-Perry of Chicago Heights was fatally shot in the 500 block of State Street in Calumet City at about 2:48 p.m. She was found with gunshot wounds and taken to Franciscan Health in Hammond, Indiana, where she was pronounced dead at 3:31 p.m. Her 19-year-old son, Leon Perry, was also shot and was taken to Christ Medical Center in Oak Lawn; he died later that evening at 6:33 p.m. Both deaths were ruled homicides.

Investigators say the two were not the intended targets. Community activist Andrew Holmes suggested the shooting may have been a case of mistaken identity. Witnesses reported the shooters fired from a dark-colored Infinity FX-type vehicle that fled west on State Street. The South Suburban Major Crimes Task Force handled the investigation and a $3,000 reward was offered for information leading to arrest and conviction. No arrests were announced immediately after the shooting and the case remained under investigation.

Does anyone have information about the dark-colored Infinity FX-type vehicle or saw activity in the 500 block of State Street that afternoon?