LONDON, Dec 10 : The FBI suspected that a female secretary in its New York office was leaking information to Irish Republican terrorists who intended to assassinate Margaret Thatcher during a trip to America, according to newly-released documents.
Hundreds of pages of FBI files reveal how America's top law enforcement agency devoted considerable resources to tracking threats to Lady Thatcher both during and after her premiership.
The most remarkable of the documents is a 1992 memo from the FBI's then-director, William Sessions, to a small group of senior agents in New York warning them they appeared to have a Republican mole in their midst.
Sessions wrote that a "uniquely-placed source" in Boston, a hotbed of Irish nationalism in the US, had told the FBI that one of its own was passing details to the Provisional Irish Republican Army (PIRA).
"The source advised that there was a leak in the New York FBI office coming from a 'female, secretary type' that give PIRA access to 'computers, name checks and ID," the FBI chief wrote. ?THE TELEGRAPH