Chad J. Gresham, 42, of Harvard.

A 42-year-old Harvard man was sentenced to 6 ยฝ years in prison on a criminal sexual assault charge after he took a plea deal, prosecutors said.

Chad J. Gresham, 42, of Harvard, was found guilty of criminal sexual assault, a Class 1 felony, according to McHenry County State’s Attorney Patrick Kenneally.

Gresham was originally charged with an additional count of criminal sexual assault and two counts of aggravated criminal sexual abuse of a family member under 18, which were dropped as part of the negotiated plea deal with McHenry County Judge Robert Wilbrandt.

Additional charges of aggravated criminal sexual abuse of a family member and two counts of criminal sexual assault were dismissed, court records show.

Gresham will be sentenced to 78 months in the Illinois Department of Corrections, which is 6 ยฝ years. He will have to register as a lifetime sex offender upon release from prison and is not entitled to day for day credit.

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Prosecutors also said that Gresham must serve at least 85 percent of his sentence before being eligible for release.

The case was investigated by members of the McHenry County Sheriffโ€™s Office and prosecuted by Sharyl Eisenstein of the McHenry County Stateโ€™s Attorneyโ€™s Office.