Raymond Kasper, the nephew of serial killer John Wayne Gacy, was convicted in McHenry County THursday of multiple counts of aggravated criminal sexual abuse and predatory criminal sexual assault against a 12-year-old girl.
He was cleared of one count of the sexual assault charge.
Kasper's bond was revoked at the request of prosecutors and he was immediately taken into custody.
Raymond Kasper of Algonquin denied on the witness stand Thursday that he assaulted a 12-year-old girl last year.
Earlier this week, the girl testified she may have merely dreamed the attack, despite physical evidence she had been abused.
Prosecutors have suggested the girl was pressured to recant her accusation.