Joseph Calbillo, 23, of McHenry.

A 23-year-old McHenry man was charged with sexually assaulting a child under the age of 13, who he was supposed to be caring for, police said.

Joseph Calbillo, 23, of the 3700 block of West Ellen Road in McHenry, was charged with two counts of predatory criminal sexual assault of a victim under 13, a Class X felony.

The McHenry County Sheriff’s Office said that a concerned parent made a report with deputies on Tuesday.

An investigation was initiated by the McHenry County Sheriff’s Office Criminal Investigation Division which revealed that Calbillo had sexually assaulted a juvenile in his care, authorities said.

An arrest warrant was issued for Calbillo and he was later arrested by the McHenry Police Department on Tuesday evening.

The sheriff’s office took custody of Calbillo and he was transported to the McHenry County jail.

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Further details regarding the assault were not released. Calbillo is scheduled to appear in bond court on Friday.

A judge ordered him held on a $500,000 bond, meaning he would have to post $50,000 cash to be released from jail.

The investigation is ongoing and anyone with additional information is asked to contact the McHenry County Sheriff’s Office Criminal Investigation Division at 815-334-4750 or McHenry County Crime Stoppers at 800-762-7867.

Tips can also be sent to the sheriff’s office tip line at