PHILADELPHIA — Two more Roman Catholic priests from the Archdiocese of Philadelphia have been found unsuitable for ministry after sexually abusing children.

The archdiocese said Sunday that it had substantiated allegations of sexual abuse of a minor against Msgr. George J. Mazzotta, 73, and Msgr. Hugh P. Campbell, 77, who were ordained in the 1960s and held a series of positions in Philadelphia-area parishes and hospitals.

Monsignor Mazzotta has not been permitted to work or present himself as a priest since May 2010, when the archdiocese received the abuse allegation against him and reported it to law enforcement.

Monsignor Campbell has been on administrative leave since December, when he reported having sexually abused a minor, the archdiocese said.