A bishop has given new details of sex abuse at a boys’ choir in Germany once headed by the Pope’s brother. Gerhard Ludwig Mueller, bishop of Regensburg, in southern Germany, where the Domspatzen choir is based, said Pope Benedict XVI’s brother Georg Ratzinger, 86, did not head the choir at the time. The two “remembered” cases of sex abuse at Domspatzen dated back to 1958 and therefore “did not coincide with the period where professor Georg Ratzinger was in charge”, Bishop Mueller said in the Vatican’s Osservatore Romano newspaper. Mr Ratzinger headed the choir between 1964 and 1994, he said. The director and composer Franz Wittenbrink, a former pupil of the school attached to Domspatzen, spoke of an “ingenious system of sadistic punishments connected to sexual pleasure” at the school.