On April 29, 1945, he was arrested by the
NKVD and brought to the
Lubyanka Prison in
Moscow for interrogation. Fr. Leoni's, "sometimes flippant answers earned him spells in
solitary confinement, but surprisingly he was not tortured, or at least he does not mention it." While refusing to inform against his fellow Catholics, Fr. Leoni had no problem with telling his interrogators exactly what he thought of the Soviet Government. According to his case file, he once said, "Given that I am a Catholic religious, I was and am an enemy of
Marxism and of the political regime which exists in the USSR - a regime, which, in my opinion is not different from
Fascism... I believe that in the USSR there is neither
democracy, not freedom for the people. The Soviet regime has stripped the people of
freedom of religion, of
freedom of the press, and of freedom of expression. One is forbidden to think freely, to develop one's initiative or creativity... I have never calumniated the Soviet Government: I have only said what I believe without mincing my words..." When NKVD interrogators confronted him with "witnesses" who claimed that he was a supporter of
Fascist dictators
Adolf Hitler and
Benito Mussolini, Fr. Leoni calmly replied, "I do not deny that I favored a change in the political system in the USSR but I never advocated the achievement of such change through an attack on the
Soviet Union... I was not a supporter of the system established by Mussolini in Italy and I never told anyone that I shared Mussolini's political views... In Odessa, during the occupation, I helped several young people to avoid being deported to Germany by the Nazis." On 13 September 1945, Fr. Leoni's interrogation ended and a formal
indictment was approved. He was declared guilty of
espionage on behalf of the
Vatican,
anti-Soviet agitation, and of trying to convert the Orthodox to the
Eastern Catholic Churches. On November 12, 1945, an NKVD Collegium sentenced him to ten years in the
Gulag. Even so, on August 28–29, 1947, a special
Temlag camp court declared Fr. Leoni guilty of violating article 58 of the Russian Criminal Code and another 25 years in
Rechlag were added to his sentence. On 9 April 1951, Father Leoni had an argument at Rechlag with KGB Captain G., who mockingly said, "God? But if your God really existed he would not allow you to be stuck here." Leoni replied, "Why would he not permit it? Look, I have been found worthy to suffer for Him and I am sure that if I endure everything to the end He will grant me an eternal reward." According to
Memorial member and historian of Soviet
religious persecution Irina Osipova, "Many of his 'outbursts' against the camp administration are not mentioned in his person dossier, but are described by his associates in their memoirs". For example,
Yuri Tregubov, a fellow prisoner who was incarcerated with Fr. Leoni in
Vorkuta, later recalled how a KGB Lieutenant-Colonel arrived in the camp during the summer of 1953 to deliver a lecture on "
Soviet humanism". The Lieut.-Col. began by saying, "Soviet power not only chastises you, it also forgives you... Millions have been released, and that's only a small percentage of those who will be freed." stood up and shouted in flawless Russian, "Don't believe the
Chekist liars! Don't believe this
godless regime! The Chekists are leading you astray, fight them!" For a brief moment, chaos reigned and the guards were only able with difficulty to restore order, after which, "humanism notwithstanding", Fr. Pietro Leoni was sent to a punishment cell. Fellow political prisoner Jan Urwich later wrote about how, in 1955, a delegation from Moscow arrived at the
labor camp to collect signatures for the
Stockholm Appeal, in which the
Cominform-controlled
World Peace Council had called for a global ban on nuclear weapons. A lecturer first made a speech calling for signatures and the
KGB officer chairing the meeting urged any prisoner who wished to speak in favor of the appeal to do so. Urwich later recalled, "From the back of the hall came a voice speaking in Russian with an Italian accent, 'Whoever signs the Stockholm Appeal signs his own
death warrant! Better a cruel death under the
atomic bomb than living on in this
happy paradise where we find ourselves now!' The hall literally erupted. The resulting noise and chaos could not be quelled and the meeting disintegrated. Everything went to pieces." Jan Urwich later recalled, "The news of Fr. Leoni's departure for Rome, at a time when no one expected it, planted much hope and joy... This man made us feel confident that he would tell that
Free World, to which he was returning, the tragic and incredible truth about the country the champions of Humanism and the brotherhood of peoples." On 17 May 1955, Fr. Leoni was handed over to representatives of the Italian Government in
Vienna, through the intervention of the
Vatican. ==Later life==