Man Charged in Cahokia Heights Double Homicide Case

Shawn L. Williams faces two counts of murder after investigation into fatal shootings in Cahokia Heights, Illinois.

Dec 17, 2025 7:37 PM Dec 17, 2025 9:56 PM

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CAHOKIA HEIGHTS, Ill. — Shawn L. Williams, 54, of Belleville, Illinois, was charged Thursday with two counts of murder following a double homicide investigation in Cahokia Heights, the Major Case Squad of Greater St. Louis announced.

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Williams faces charges of murder with intent to kill or injure, according to the St. Clair County State’s Attorney James Gomric’s Office. He is currently being held at the St. Clair County Jail pending a detention hearing in accordance with the Illinois Safe-T Act.

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The investigation was led by Captain Robert Thomason of the Belleville Police Department, who served as Deputy Commander for the case. Investigators pursued more than 75 leads during the inquiry into the double homicide.

The Major Case Squad expressed gratitude to all participating agencies and personnel for their dedication and professionalism throughout the investigation.

All defendants are presumed innocent until proven guilty in a court of law.

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