A US bishop-elect has resigned just weeks before he was due to start the job, following an allegation that he had sexually abused a minor, Catholic Church officials say.
Father Michel Mulloy, 66, was appointed by Pope Francis on June 19 to be bishop of Duluth, Minnesota and was due to be formally installed in a ceremony on October 1.
It is almost unheard of for a bishop-elect to resign between the time of his appointment and installation.
It was not immediately possible to contact Mulloy or his lawyers for comment early on Monday, a public holiday in the United States.
A Vatican statement said Pope Francis had accepted Mulloy's resignation but gave no more details.
The diocese of Rapid City, South Dakota, where Mulloy had served as a priest, released a statement saying it had last month "received notification of an allegation against Father Mulloy of sexual abuse of a minor in the early 1980s".
The diocese said that when it received the allegation, police were informed and Mulloy was instructed to refrain from public ministry while a church investigation determined if the allegation was credible.
A diocesan board made up of mostly lay members reviewed the investigation's findings and concluded that the accusation "met the standard" for further investigation, the diocese said.
Mulloy submitted his resignation after he received a summary of the allegation, the diocese added.