 Born in the state of Michoacán , Buendía first wrote for La Nación , the official magazine of the National Action Party ( PAN ) . After losing interest in the party , he left to work for La Prensa and became the editor @-@ in @-@ chief in 1960 . He left the newspaper in 1963 and worked for several different media outlets in Mexico throughout the 1970s and ' 80s , including the Mexico City @-@ based newspapers El Universal and Excélsior . Buendía was recognized largely for his investigative reporting , and particularly for his coverage of the CIA 's covert operations in Mexico , the rise of ultra @-@ rightwing groups , fraudulent businessmen , corruption in Mexico 's state @-@ owned petroleum company Pemex , and the role of organized crime in Mexico 's political system . He was also famous for breaking news on controversial political subjects thanks to his access to top Mexican officials . His investigative reporting , however , angered many and made him a frequent target of death threats , which he took very seriously . 
