The archbishop of Vienna, a longtime friend and former student of Pope Benedict XVI, has confirmed that it was he who wrote a letter to his former teacher urging him to accept election as pontiff in 2005 if the votes went his way, AP reports.

Cardinal Christoph Schoenborn issued a statement Wednesday confirming a revelation in a new book by Benedict’s personal secretary, Archbishop Georg Gaenswein, that was published soon after Benedict died Dec. 31 at age 95.

The book, “Nothing But the Truth: My Life Beside Pope Benedict XVI,” already has generated controversy, because it revealed confidential communications and exposed the tensions that simmered during the decade in which Benedict lived as an emeritus pope alongside Pope Francis.

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