(Vatican Radio) In a new Apostolic Letter, issued motu proprio, Pope Francis has established new norms providing for the removal of Bishops (or those equivalent to them in Canon Law) from their offices in cases where they have “through negligance, committed or omitted acts that have caused grave harm to others, either with regard to physical persons, or with regard to the community itself.”
P.S. An Apostolic Letter, issues motu proprio, is a document of the highest papal authority.
EWTN: A document issued Motu Proprio is from the Pope on his own initiative, and not in response to a request or at the initiative of others. Its legal determinations carry the full force of papal authority, though it does not derogate from existing laws unless specifically stated. It can be any category of document.