He is rumoured to have been an informant for the US government .
``  There is a popular rumor in Mexico that states that he was an informant for the US government on communism and guerrilla movements near the Mexico-US border.  As narrated by the famous Mexican-folk ( norteño ) group Los Tigres del Norte , in the drug-ballad ( narco-corrido ) called `` '' El Zorro de Ojinaga '' '' , written by Paulino Vargas , that narrates some of the exploits of Acosta Villarreal . ''
Pablo Acosta Villarreal