Mario Terán was born around 1940 and is married with five children, and covertly lives in Bolivia's largest city Santa Cruz under the alias of "Pedro Salazar". Some speculate that he has an agreement with the U.S. CIA, who is said to be protecting him, while others theorize that he is afraid of a Cuban unit seeking revenge.
- Stuart A. Kallen (1 October 2012). Che Guevara: You Win or You Die. Twenty-First Century Books. p. 80. ISBN 978-1-4677-0144-0.
- Santo Ernesto: The Curse Of Che Guevara by Jens Glüsing, Der Spiegel, October 8, 2007
- Salim Lamrani (19 December 2014). Cuba, the Media, and the Challenge of Impartiality. NYU Press. p. 47. ISBN 978-1-58367-473-4.