The Bishop of San Diego has explained why he did not respond to a 2016 letter alleging sexual misconduct on the part of Archbishop Theodore McCarrick and other Catholic clerics.

The letter was sent to Bishop Robert McElroy by psychotherapist Richard Sipe.

McElroy has been reported as a frontrunner to succeed Cardinal Donald Wuerl of Washington, DC. Calls in recent weeks for the cardinal’s resignation follow an Aug. 14 Pennsylvania grand jury report on clerical sexual abuse, which questions the cardinal’s handling of sexual abuse allegations during his tenure as Bishop of Pittsburgh.