Carlos Fuentes had been watched closely for years. According to NBC Latino, the late Mexican author was monitored closely by the Federal Bureau of Investigation (FBI) and the U.S. State Department for more than 20 years.
The reason? The author, who died in 2012 from an internal hemorrhage, was apparently considered to a communist and sympathizer of Cuba's Fidel Castro.
The news of Fuentes' monitoring comes from documents posted on the FBI's website this week. In addition, the documents reveal that the U.S. denied him an entry visa at least twice during the 60s.
The documents totaled 170 pages and included some newspaper articles about how his visa application was denied.
In them, the novelist was described as "a leading Mexican communist writer."
He was also described as a "well-known Mexican novelist with long history of subversive connections."