Moise Tshombe
The Ndola United Nations DC-6 crash occurred on 18 September 1961 in Northern Rhodesia. The crash resulted in the deaths of all people onboard including Dag Hammarskjöld, the second Secretary-General of the United Nations, and 15 others. Hammarskjöld had been "en route" to cease-fire negotiations with Moise Tshombe during the Congo Crisis. Three official inquiries failed to determine conclusively the cause of the crash, which set off a succession crisis at the United Nations.