Mr Coffie testified at trial that he was then placed against the officers' unmarked car, still handcuffed, and told to spread his buttocks before Mr Korhonen pulled down his trousers and assaulted him by inserting a screwdriver into his rectum.
Mr Coffie, who suffered internal injuries and was left bleeding from his rectum, reported the incident when the officers took him to Cook County jail, where he spent a night detained on drug charges.
The next day, Mr Coffie's mother took him to hospital, where a doctor found a tear in his rectum. Chicago police investigators were summoned to the hospital and Mr Coffie gave a second statement.
Chicago police investigators immediately searched Mr Korhonen and Mr Lodwich's car and found three screwdrivers in their glove compartment. Later testing on swabs taken from the glovebox were positive for fecal material.
However, the City's Office of Professional Standards, which researched the claims of officer misconduct, found the allegations could not be sustained. No disciplinary action was taken against Mr Korhonen or Mr Lodwich and a criminal case was not pursued.