Paroled child murderer charged with failing to register as sex offender
A man convicted of killing a child is facing charges that he didn’t tell police that he had changed jobs and moved near a day care center.
Cayce M. Williams, 52, is charged with failing to register as a sex offender — change of address, failing to register as a sex offender — change of employment, failing to inform an agency of information change, and being a child sex offender residing in a day care zone.
According to a news release from the Kane County state’s attorney’s office, between March 27, 2024, and Sept. 12, 2025, Williams did not register his change of address and place of employment with Carpentersville police.
It was discovered he was living on the 0-100 block of Elm Avenue in Carpentersville, within 500 feet of a day care center. According to the state police’s sex offender registry, Williams had last registered as living in Chicago.
Williams was living in Carpentersville at the time of his arrest. According to the Illinois State Police Offender Registry, Williams had last registered as living in Chicago.
Williams was arrested Sept. 12 and is free on pretrial release. His next court date is Oct. 30.
Williams was charged in 1997 with sexually assaulting and killing his live-in girlfriend’s 20-month-old daughter, Quortney Kley, in Elgin. Kane County prosecutors sought the death penalty. In 2006, Williams pleaded guilty to first-degree murder and predatory criminal sexual assault and was sentenced to 48 years in prison.
Williams had brought Quortney to an Elgin hospital, saying he found her unconscious and not breathing while he babysat the child and her older sister, according to previous Daily Herald articles.
Police said he later told them he sexually assaulted Quortney and squeezed her head in his hands until she stopped breathing, then tried to make the killing look like an accident. An autopsy determined she had been beaten and had internal bleeding.
Under state law at the time, he was eligible for parole after serving half of his sentence. He also received credit for the nine years he spent in jail awaiting trial.
Williams was released in February 2021 and initially moved in with family near Crystal Lake. About a week later, he moved to Chicago.