The only other salient detail known to police in Munich was that Krug commuted to Cairo frequently. He was one of dozens of Nazi rocket experts who had been hired by Egypt to develop advanced weapons for that country.
HaBoker, a now defunct Israeli newspaper, surprisingly claimed to have the explanation: The Egyptians kidnapped Krug to prevent him from doing business with Israel. But that somewhat clumsy leak was an attempt by Israel to divert investigators from digging too deeply into the case -- not that they ever would have found the 49-year-old scientist.
We can now report -- based on interviews with former Mossad officers and with Israelis who have access to the Mossad’s archived secrets from half a century ago -- that Krug was murdered as part of an Israeli espionage plot to intimidate the German scientists working for Egypt.