Dag Hammarskjöld

On the night of September 17-18, 1961, a DC-6 aircraft carrying United Nations Secretary-General Dag Hammarskjöld and fifteen others crashed in dense bush approximately 10 miles from the airport at Ndola, Northern Rhodesia (now Zambia). All aboard were killed except Sergeant Harold Julien, who survived for several days before dying of his injuries. Hammarskjöld had been flying to negotiate a ceasefire in the Congo Crisis with Moise Tshombe, leader of the breakaway province of Katanga.

The initial investigation by the Rhodesian authorities ruled the crash an accident, attributing it to pilot error. However, this finding was immediately disputed. Several witnesses reported seeing a second aircraft near the DC-6 before the crash, and some reported seeing the plane on fire before it hit the ground. Sergeant Julien, before dying, reportedly said 'we were on the approach and then there was an explosion.' His statements were not properly recorded by the Rhodesian authorities.

Suspicions of foul play centered on several parties who had motives to eliminate Hammarskjöld: mining companies with interests in Katanga's rich mineral resources, the governments of Belgium, Britain, and South Africa which supported Katangan secession, and elements within the CIA who viewed Hammarskjöld's aggressive UN peacekeeping as threatening to Western interests in the region. Documents declassified decades later revealed extensive Western intelligence operations in the Congo.

The UN has conducted multiple investigations, most recently appointing an Eminent Person in 2015 and a Panel of Experts whose reports in 2017 and 2019 found 'persuasive evidence' that the plane was brought down by external attack and called for member states to release classified intelligence files. As of 2024, several countries—including the United States, United Kingdom, and South Africa—have not fully complied with these requests. The true cause of the crash remains officially undetermined.