In October 1964 two members of the Central Committee of the Bulgarian Communist Party, Ivan Todorov-Gorunya and Tsolo Krastev [bg], began to plot against Zhivkov.
[1] The plan was to execute the coup with the aid of the Bulgarian People's Army during the plenum of the Central Committee of the BCP.
[1] The conspirators aroused suspicion and a counter-intelligence operation carried out between 28 March and 12 April 1965 uncovered the scheme and arrested those involved.
[1] Rumors spread throughout Sofia about the suicide of a high-ranked party official and about the possibility of a plot against the current leadership.
"[3] On 15 June 1990 the Military College of the Supreme Court rehabilitated the convicted conspirators, stating: "These offenses were socially necessary and aimed at the overthrow of a regime, which has absolutely been proven to have been dictatorial".