After the end of the war, the new Romanian communist leadership started a campaign against Christian (especially against the catholic Christian) religion. As a consequence, the Vatican allowed secret consecration of bishops. Dr. Szilárd Bogdánffy was consecrated as bishop of Oradea of the Latins and auxiliary bishop of Satu Mare on February 14, 1949 by Gerald Patrick O’Hara, Regent of the Apostolic Nunciature to Bucharest. The new bishop was arrested and imprisoned only two months later. He had previously been approached, on several occasions, by representatives o the regime, with the request that he lead an "independent Romanian Latin-rite Church, with no ties to the Vatican" which he adamantly refused. Until his death he spent four years as a captive in various prisons throughout Romania, including the evil reputed Capul-Midia camp. He fell seriously ill, being affected by bad conditions and regular tortures. In Aiud Prison, as the Byzantine rite Catholic bishop of Lugoj, Ioan Ploscaru recalled, Bishop Bogdánffy was "humble and serene, always ready to help his fellow sufferers". Although lying with serious pneumonia, the prison doctor refused him the necessary medication claiming he was not worthy of it. He died in solitary confinement on October 3rd, 1953 in the prison of Aiud, Romania.