Chicago (CBS) — A St. Charles man has been sentenced to 63 years for sexually assaulting a child he knew.

(Credit: Kane County State’s Attorney’s Office)

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Kane County Circuit Judge Clint Hull sentenced 46-year-old Christopher Jackson after he was found guilty in November for criminal sexual assault and aggravated criminal sexual abuse.

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Kane County state’s attorneys presented evidence that between 2013 and 2015 Jackson sexually assaulted the victim.

Jackson faced a minimum sentence of 51 years in prison. He must register for life as a sexual offender.

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“This defendant carried on a sexual relationship with a child who should have been able to trust that he would protect and care for, not exploit and victimize,” state’s attorney Joe McMahon said. “Christopher Jackson’s selfish crimes denied a child a normal and healthy childhood and cost him his freedom.”