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Cryptonym: AMCLATTER-6

Definition:
Unknown identity. AMCLATTER-6 was probably an associate of Bernard Barker (AMCLATTER-1).
Status:
Unknown
Discussion:
In 10/59 the Alberto Bayo operation (“Mendizabal affair”) against Venezuelan President Marcos Perez Jimenez for Cuba, AMCLATTER -1 (Barker) disclosed sensitive information (about Dave Phillips and others including aliases they used) in front of ODENVY (FBI) informant (possibly Catherine Taaffe) endangering AMCLATTER-1 and AMCLATTER-6; AMCLATTER-6 is a woman who went to Miami and had the name of an (redacted) FBI agent as emergency contact.

It helps to review all of these docs together: 104-10215-10416; 104-10215-10417; 104-10215-10055; 124-10205-10370 (FBI report); 104-10237-10101. In addition, a cable on November 5, 1959, mentioned that AMCLATTER-6's C-Number was C-79496.
Sources:

104-10215-10416: CABLE RE MEETING

10/15/59: Cable from Director to Havana: REF: HKH-A-5485: "1. On 15 October an ODENVY (FBI) agent Miami told Karnley he met AMCLATTER-1 at home of unnamed ODENVY source around 13 October. AMCLATTER-1 knew all details ref and discussed these freely with ODENVY. Since Karnley discussed case with ODENVY days earlier, ODENVY assumed AMCLATTER-1 was KUBARK (CIA) agent who intercepted letter described ref. ODENVY states AMCLATTER-1 stopped Miami enroute New York on business. 2. Because above info passed to Karnley off the record, request station use caution in discussing matter with AMCLATTER-1."

104-10215-10417: CABLE RE MEETING DETAILS

10/16/59: Cable from Director to Habana (Orig: Hugh O. Macauley, WH/III/CARIBBEAN): REF: DIR-48781 (OUT-56374)* "Karnley reported further info received from ODENVY (FBI) agent: A. Date of meeting was 7 Oct not 13 Oct. B. AMCLATTER-1 named Andrew F. Merton and others in group and discussed aliases they use with each other. C. Unnamed ODENVY source present throughout meeting. D. AMCLATTER-1 said he would be in Havana 9 Oct. WH Comment: *Reported that AMCLATTER-1 had disclosed sensitive information in the presence of an ODENVY agent at the home of an unnamed ODENVY source in Miami, during a stop over in that city on his way to New York on business."

104-10215-10055: CABLE: SUBSEQUENT 7 OCT INTERVIEW AMCLATTER-1 WITH ODENVY, HE RETURNED

11/05/59: Cable from Director to Havana (Orig: Thomas Flores, WH/III/AO): REF: DIR 48816 (OUT 56523)* "1. Subsequent 7 Oct interview AMCLATTER-1 (Bernard Leon Barker) with ODENVY (FBI), he returned Miami with AMCLATTER-6 (Handwritten: C-79496). Both met with ODENVY and debriefed re (REDACTION) penetration Perez Jimenez office. 2. While in Miami both agents discussed case with ODENVY informant (REDACTION) probably identical with unidentified ODENVY informant mentioned ref. On 5 Nov ODENVY reported (REDACTION) fired by Perez Jimenez, admitted to ODENVY she planted latter's office as part kidnap plot. 3. (REDACTION) claims (REDACTION) informed Cesar E. Camacho Covant, former Justice Minister under Batista, that (REDACTION) writing to Bayo. Camacho questioned (REDACTION) about letters. (REDACTION) denied writing Bayo, but fired presumably because Camacho informed Perez of accusation. 4. View above likely Bayo may become aware leak his of against Perez, possibly endangering AMCLATTER-1 and -6. 5. Recommend immediate security review and preparations for exfiltration AMCLATTERs if warranted. WH Comment: *AMCLATTER discussed operation being conducted against former Venezuelan President Marcos Perez Jimenez by Alberto Bayo, Jr. for Cuban Government with ODENVY special agent in presence unidentified ODENVY informant."

104-10237-10101: DISPATCH: IN CONSEQUENCE OF THE INFORMATION FORWARDED IN REFERENCE AND PREVIOUS RELATED CORRESPONDENCE

11/20/59: Dispatch from COS, Habana to Chief, WHD (Info: WHD Representative, Miami): Subject: Operational Security Status of AMCLATTER-1 and AMCLATTER-6: "1. In consequence of the information forwarded in reference and previous related correspondence, a security review was instituted on Subjects. As a result, AMCLATTER-1 was reprimanded for unoperational behavior and warned against repetition; AMCLATTER-5 was temporarily taken out of the AMCLATTER net pending the results of the security review; and AMCLATTER-6 was instructed to cease intelligence collection from Bayo's office until it is reasonably certain that no provocation will be forthcoming from him, in a possible attempt to learn the source of the leaks in his office. 2. According to A-1, he did not return to Miami with A-6 and was not debriefed as reference appears to indicate. A-6 went alone to Miami and had the name of (REDACTION) FBI agent, as an emergency contact. Having picked up information regarding a possible attempt to assassinate Esteban Ventura, former police chief under Batista, she got in touch with (REDACTION) FBI agent. 3. Neither A-1 nor A-6 feels in any danger as a result of uncovering the Mendizabal affair. It is to be noted from reference that Mendizabal herself may feel that FBI informant (REDACTION) is responsible for exposing her connection with Bayo. Furthermore, A-6 has since reported that Mendizabal made a 2-hour telephone call from Miami to Bayo in Habana on about 7 or 8 November. Bayo took the call in his office and was overheard to say that he was 'pretty sure of his four office people.' He told Mendizabal that she had been seen going into Cuban Air Force headquarters and that her telephone calls from Miami to his office were a mistake since such calls were easily checked. He told Mendizabal that he was preparing a new telephone number for her using the 'name that her girl friend knows' (A-6 thinks that this name may be Delgado)." (CONTINUED BELOW)

104-10237-10101: DISPATCH: IN CONSEQUENCE OF THE INFORMATION FORWARDED IN REFERENCE AND PREVIOUS RELATED CORRESPONDENCE

11/20/59: Dispatch from COS, Habana to Chief, WHD (Info: WHD Representative, Miami): Subject: Operational Security Status of AMCLATTER-1 and AMCLATTER-6: "Bayo also told Mendizabal that, if she got into any trouble, she knew where to go to be flown to Cuba. A-6 is of the opinion that Bayo and Mendizabal may have been discussing possible security leaks. 4. It would be of interest if Karnley could ascertain informally if A-6 has reported any information concerning a possible assassination attempt against Ventura to FBI agent. A discreet inquiry at the local FBI office failed to reveal that any such information has recently been received by that office. Andrew F. Merton."

124-10205-10370 :

12/23/59: FBI report on the Mendizabal affair.

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Contributors:
John Newman • MFF

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