In February 1966, while Nkrumah was on a state visit to North Vietnam and China, his government was overthrown in a violent coup d'état led by the national military and police forces, with backing from the civil service
In 1978 John Stockwell, former Chief of the Angola Task Force of the U.S. Central Intelligence Agency (CIA), wrote that agents at the CIA's Accra station "maintained intimate contact with the plotters as a coup was hatched". Afterward, "inside CIA headquarters the Accra station was given full, if unofficial credit for the eventual coup. ...None of this was adequately reflected in the agency's written records."
Later the same year, Seymour Hersh of The New York Times, citing "first hand intelligence sources," defended Stockwell's account, claiming that "many CIA operatives in Africa considered the agency's role in the overthrow of Dr. Nkrumah to have been pivotal

Damn, how does it keep happening