From the New JFK Files: FBI Report Identified Cuban Assassin as CIA Asset

Four days after JFK's murder, the Bureau received information that hit man Herminio Díaz was working with the Agency

Sandalio Herminio Díaz Garcia (1923-1966) (Credit: Claire-Agathe/YouTube)

Last year JFK Facts reported that an anti-Castro Cuban exile and known assassin named Herminio Díaz Garcia had been identified by two associates as having participated in the murder of President John F. Kennedy in Dallas on November 22, 1963.

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Earlier this month, JFK researcher David Boylan, co-author (with Larry Hancock) of “The Oswald Puzzle: Reconsidering Lee Harvey Oswald” (2025), called our attention to an FBI report about Díaz, dated November 26, 1963, first made public in 2017.

The problem with the version found on the Mary Ferrell Foundation website: it only includes one page. Since the cover page identifies the document as a 3-page record, two pages were missing. To be sure the FBI (or CIA) hadn’t withheld the rest of the document from the National Archives, I made the trek to College Park, Maryland, on April 21 in search of the two missing pages — and I found them. They told an unknown story.

Four days after JFK’s death, informant “MM-761-S” told FBI agent Thomas Errion: “HERMINIO DIAZ is or was working for the CIA.”