On February 22, 1972 a faction loyal to Ange Diawara attempted a coup against President Marien Ngouabi.Joachim Yhombi-Opango was instrumental in ending the coup. After more than a year of evading capture Diawara was ambushed and killed in April 1973 by forces loyal to Ngouabi.
^ abLentz, Harris M. (2013). Heads of States and Governments Since 1945 (3rd Edition). Routledge. p. 193. ISBN1-884964-44-3.
^Clark, John Frank; Samuel Decalo (2012). Historical Dictionary of Republic of the Congo (Fourth Edition). Scarecrow Press. p. 122. ISBN978-0-8108-4919-8.