'In 2019, new information emerged relating to Julien’s stay in the Ndola hospital, provided by the government of Zimbabwe to the current U.N. inquiry. This fresh information reveals that the Rhodesian authorities actively sought to prevent Julien’s statements about the flight and the crash from being made public. A senior Rhodesian intelligence official instructed Julien’s medical superin­tendent that “no one of his hospital staff must talk about this,” in relation to Julien’s statements that he had seen sparks in the sky. The superintendent and another doctor were warned about “the security angle” and asked “to make sure that none of their staff talked.”'

https://yalereview.org/article/susan-williams-dag-hammarskjold-crash-