Man who sexually assaulted, impregnated disabled assisted living facility resident handed 25-year sentence

GENEVA, Ill. — A man who sexually assaulted and impregnated a disabled resident at an assisted living facility in Geneva in 2023, will spend more than 20 years in prison.

24-year-old Isaiah Fields, who previously pleaded guilty to sexually assaulting a victim who he knew had a severe or profound intellectual disability, which made them unable to give consent, has been sentenced to 25 years in the Illinois Department of Corrections, Kane County State’s Attorney Jamie Mosser announced Friday.

According to prosecutors, at some point between Aug. 1, 2023, and Sept. 5, 2023, Fields, who was 22 at the time, sexually assaulted a resident of Marklund Home in Geneva, a facility that provides residential, education and therapeutic services to individuals of all ages who have profound developmental disabilities and special healthcare needs.

Months later, in April of 2024, it was discovered that the victim was nearly fully pregnant as a result of the assault and later gave birth.

During an investigation into the assault by the Kane County Sheriff’s Office, deputies obtained buccal swab DNA tests from current and previous male employees.

Fields’ was then taken into custody after his DNA test came back positive.

On Jan 14, Fields pleaded guilty to one felony count of aggravated criminal sexual assault.

In a previous news release sent out in mid-January announcing that Fields had pleaded guilty to the charges, Mosser stated that he was a Chicago resident. However, in the most recent release announcing his sentence, Mosser said that Fields was a Batavia resident.

“Today’s sentencing holds Isaiah Fields accountable for his heinous actions and the profound harm he caused to a vulnerable individual who was unable to protect themselves. The bravery of the victim’s caregivers, the diligent work of law enforcement, and the efforts of my office ensured that justice was served. This sentence reflects the gravity of his crime, and we remain committed to safeguarding the most vulnerable members of our community from exploitation and harm,” Mosser said.

Fields’ sentence was handed down by Judge John Barsanti and he must serve at least 85% of the sentence in accordance with state law.

In addition to his prison term, Fields must also register for life as a sexual offender in accordance with the Illinois Sexual Offender Registration Act.

Fields will receive credit for 308 days served in the Kane County jail.