The Roman Catholic Diocese of Portland said it has substantiated an allegation that a minor was sexually abused by an educator in Madawaska. A diocesan investigation resulted in the finding against Brother Paul Gauvin, former director of religious education at St. Thomas Aquinas Church. Earlier this year, a Maine man told an administrator at Sacred Heart Parish in Bloomfield, Conn., that Gauvin, now 73, sexually abused him in the early 1970s while Gauvin was in Madawaska. The victim said he was 11 or 12 years old when the abuse occurred. Gauvin has been removed from his position at Sacred Heart Parish and will have no contact with minors.