 Following the Liberation of the French capital on 19–25 August 1944, he was arrested on November 20, then interned in Nanterre.Suffering from tuberculosis, he asked for his release in the spring of 1945, which he would only obtain three years later.Antignac was condemned to capital punishment on 9 July 1949 after he unsuccessfully tried to convince the judges he was not an anti-Semite and that he ignored the fate of Jews.