Questions are being raised about whether Pope Benedict was personally involved in covering up a case of child sex abuse by a Roman Catholic priest. Documents seen by the New York Times newspaper allege that in the 1990s, long before he became Pope, he failed to respond to letters about a US case. Fr Lawrence Murphy, of Wisconsin, was accused of abusing up to 200 deaf boys. Defending itself, the Vatican said US civil authorities had investigated and dropped the case. For more than 20 years before he was made Pope, Joseph Ratzinger led the Congregation for the Doctrine of...