The Chester County DA has accused a Downingtown man of sexually abusing three minors under 10 years old, including two of his own kids.

Christopher Guiseppe, 33, was arrested on multiple charges stemming from allegations he abused the three children, two of which were his biological children and one was the daughter of his girlfriend, between January 2014 and April 2016 in the basement where he lives in his parents’ house, District Attorney Tom Hogan announced.

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“We are concerned that there may be more victims out there. Any child exposed to this defendant was at risk,” Hogan stated.

At various times, Guiseppe was placed in charge of the three children, ages 6, 8 and 9, and he allegedly showed them pornography before sexually assaulting the children individually, the DA added.

Court documents showed that the suspect was alleged to have made the children join him in bed naked and perform oral sex on him, according to Philly.com.

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Guiseppe has been charged with involuntary deviate sexual intercourse, aggravated indecent assault, corruption of minors, incest and related charges, according to the district attorney. He was being held in Chester County Prison.