MINNEAPOLIS (WCCO) — A man who says he was sexually abused by a nun spoke out on Wednesday as part of the first civil lawsuit in Minnesota filed against an order of Catholic nuns.

Douglas Devorak, 58, of Shakopee, says the abuse happened when he was 10 years old at St. Michael’s Catholic School in Madison, Minnesota.

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He was in fifth grade in 1967, and Devorak says sister Mary Regina repeatedly assaulted him in the boys’ bathroom and in the classroom.

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Devorak’s lawsuit is also filed against the Diocese of New Ulm.

“Our parents trusted these people with our moral and religious upbringing,” Devorak said at a press conference. “And people say, ‘Doug, why did you wait so long?’ And the answer’s real simple my parents couldn’t have taken that.”

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Attorneys say they are investigating other cases of sexual abuse by nuns.