Krüger hid at his home until November 1946 when he handed himself over to the British authorities. Forging an enemy's currency was not a war crime; he faced no charges. He was detained until early 1947 when he was handed over to the French. They attempted to persuade him to forge passports for them, but he refused; he was released in November 1948. He underwent a denazification process, during which statements were produced from the forger-inmates whose lives he had been responsible for saving. He later worked for the Hahnemühle paper company. In 1965 the East German writer Julius Mader published , an attack on the West German government for harbouring Krüger.