MINEOLA, New York — A priest and former president of a prestigious Catholic high school on Long Island has been suspended after allegations of sexual abuse of a minor were deemed "credible."

The Marianist (MEHR'-ee-uh-nihst) order, also known as the Society of Mary, made the announcement late Friday afternoon on the website of Chaminade (SHAH'-mih-nahd) High School.

Newsday (http://nwsdy.li/1ZQZ1PJ ) says the Rev. James Williams has denied the allegations. The Marianist statement said a "comprehensive investigation" was conducted by the order.

Williams resigned in 2011 as president of the all-boys institution.

The Marianists said they have contacted the Nassau County district attorney and the Diocese of Rockville Centre about the allegations. They did not elaborate.

Williams could not be reached Saturday. There was no immediate information on a lawyer who could comment on his behalf.