The cleric, nicknamed Monsignor Cinquecento after the €500 bills he habitually carried around with him, was charged with fraud and corruption, together with a former secret service agent and a ­financial broker. All three were suspected of attempting to smuggle €20m by private plane across the border from Switzerland.

Prosecutors alleged that the priest, a former banker, was using the Institute for Religious Works – the formal name for the Vatican's bank – to move money for businessmen based in the Naples region, widely regarded in Italy as a haven of organised crime. Worse still, Scarano (who, together with the other men, has denied any wrongdoing) had until only a month earlier been head of the accounting department at the Administration of the Patrimony of the Apostolic See, the treasury of the Vatican.