Pope Francis has accepted the resignation of a U.S. bishop who pleaded guilty to failing to report a suspected priestly child abuser, answering demands of victims to crackdown on bishops who covered up for pedophiles.

The Vatican said Tuesday that Bishop Robert Finn had offered his resignation under the code of canon law that allows bishops to resign early for illness or some "grave" reason that makes them unfit for office.

Finn, who leads the Diocese of Kansas City-St. Joseph in Missouri, waited six months before notifying police about the Rev. Shawn Ratigan, whose computer contained hundreds of lewd photos of young girls taken in and around churches where he worked. Ratigan was sentenced to 50 years in prison after pleading guilty to child pornography charges.