escape tools into Debus' cell, which were found in the search after the attack, and was supposed to prove Debus' participation. Hence, the detainee started a hunger strike as a protest against this. Sigurd Debus died on April 16, 1981 shortly before the date of his discharge from prison. References Christa Ellersiek, Wolfgang Becker: Das Celler Loch. Die Hintergründe der Aktion Feuerzauber. Verlag am Galgenberg, Hamburg 1987, http://www.taz.de/index.php?id=archivseite&dig=2007/05/09/a0046 https://web.archive.org/web/20090430095753/http://www.zeit.de/1987/25/Feuerzauber-mit-dunklen-Figuren 1978 in West Germany 20th century in Lower Saxony False flag operations Intelligence operations Diversionary tactics Propaganda techniques Psychological warfare techniques Law of war Deception