At least 547 members of a prestigious Catholic boys' choir in Germany were physically or sexually abused between 1945 and 1992, according to a report released Tuesday. Allegations involving the Domspatzen choir in Regensburg that was run for 30 years by pope emeritus Benedict XVI's elder brother, Rev. Georg Ratzinger, were among a spate of revelations of abuse by Roman Catholic clergy in Germany that emerged in 2010. In 2015, lawyer Ulrich Weber was tasked with producing a report on what happened. The report said 547 boys at the Domspatzen's school with a high degree of plausibility" were victims of physical or sexual abuse, or both. It counted 500 cases of physical violence and 67 of sexual violence, committed by a total of 49 people. At the choir's preschool, "violence, fear and helplessness dominated" and "violence was an everyday method," it said. "Alongside individual motives, institutional motives - namely, breaking the will of the children with the aim of maximum discipline and dedication - formed the basis for violence." Ratzinger, who is now 93, has acknowledged slapping pupils after he took over the choir, though such punishments were commonplace in Germany at that time. He also said he was aware of allegations of physical abuse at the elementary school and did nothing about it, but he was not aware of sexual abuse. The report faulted Ratzinger "in particular for 'looking away' or for failing to intervene."