</s>104-1030-10010 2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992 SECRET 15 May 1995 FOR: David Marwell Executive Director, ARRB FROM: John Pereira CIA/Historical Review Group SUBJECT: Mexico City/Sensitive Information The Directorate of Operations prepared the attached statement to assist the Assassination Records Review Board. The statement explains the sensitivity of the records related to telephone tap operations in Mexico City. This may help provide a perspective for further discussions on the subject. John Pereira Attachment SECRET

Summary: The document discusses the release of information related to U.S. telephone tapping operations (teltaps) in Mexico City under the JFK Assassination Records Act of 1992. It notes that references to these operations must be removed from released documents due to sensitivity concerns, including protection of sources and methods. The joint U.S.-Mexican teltap operation, which began over three decades prior, remains active in a modified form. Disclosure of its existence could harm ongoing operations by discouraging Mexican liaison cooperation and potentially lead to termination of the partnership.  

Key People: John Pereira (CIA/Historical Review Group), David Marwell (Assassination Records Review Board)  
Key Locations: Mexico City  
Key Events: Joint U.S.-Mexican telephone tapping operation, sensitivity concerns over disclosure, ongoing operational impact  
Key Organizations: CIA, Assassination Records Review Board, Mexican liaison station

JFK Declassified Files

104-10330-10010.pdf

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