Although no evidence has ever been able to corroborate this hypothesis, several people close to the House of Hesse-Kassel (such as Lord Mountbatten) considered that the plane crash in which Christoph was killed was due to an ordered sabotage by Adolf Hitler. Regardless, the circumstances of the accident were never determined and even the flight plan chosen by the prince to return to Germany raised questions. (Mateos Sainz de Medrano 2004, p. 479 and Petropoulos 2006, pp. 308–310). Mateos Sainz de Medrano, Ricardo (2004). La Familia de la Reina Sofía: La Dinastía griega, la Casa de Hannover y los reales primos de Europa (in Spanish). Madrid: La Esfera de los Libros. ISBN84-9734-195-3. Petropoulos, Jonathan (2006). Royals and the Reich: The Princes von Hessen in Nazi Germany. Oxford University Press. ISBN978-0-19-533927-7.
Organized posthumously between 1950 and 1953, the denazification trial of Prince Christoph established that he could not have been classified either in category I ("major delinquents") or II ("delinquents"), nor even in category III ("Juvenile delinquents"), and that there was therefore no reason to confiscate his inheritance (Petropoulos 2006, pp. 330, 362). Petropoulos, Jonathan (2006). Royals and the Reich: The Princes von Hessen in Nazi Germany. Oxford University Press. ISBN978-0-19-533927-7.