O’FALLON, IL – At approximately 7:43 p.m. on August, 29, 2025, O’Fallon Police Department officers responded to a call in the 600 block of W. Madison St. in O’Fallon, IL for a report of a disturbance and a man armed with a knife. ​ Upon arrival, officers saw two people covered with blood running from a man, 53-year-old Matthew Blanke of O’Fallon, IL, who was armed with a knife outside the residence. ​ An officer engaged with Blanke, who refused to drop the knife, and the officer fired their firearm, striking Blanke. ​ Officers rendered aid, but Blanke was pronounced deceased on scene. ​ The two victims were transported to the hospital with non-life threatening cuts and stab wounds. ​ The officer was not injured. This video was obtained from the Illinois State Police video archive. This video is meant to be used in an educational manner.