Agency: FBI
Originator: FBI
From: SAC, WMFO
To: DIRECTOR, FBI
Document date: 6/10/68
Document type: PAPER, TEXTUAL DOCUMENT

## Page 1

Released under the John F. Kennedy Assassination Records Collection Act of 1992 (44 USC 2107 Note).

DATE: 11-14-2017

JFK ASSASSINATION SYSTEM

IDENTIFICATION FORM

AGENCY INFORMATION

AGENCY: FBI

RECORD: NUMBER: 124-10197-10366

RECORD_SERIES:

AGENCY FILE NUMBER: 9-48130-2

DOCUMENT INFORMATION

ORIGINATOR: FBI

FROM:

SAC, WMFO

TO: DIRECTOR, FBI

TITLE:

DATE: 06/10/1968

PAGES: 8

SUBJECT:

THREAT, FOREIGN GOVERNMENTS, ERNESTO, CUBAN POWER

DOCUMENT TYPE:

ORIGINAL

CLASSIFICATION:

PAPER, TEXTUAL DOCUMENT

Unclassified

NEW

CLASSIFICATION:

REVIEW DATE:

STATUS

04/06/1998

UPDATE DATE:

Redact

COMMENTS:

RESTRICTIONS:

JFK Act 6 (4)

3 PAGES IN SPANISH, INC 3 TG, ENV

DocId: 32287590

Page 1

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## Page 2

Released under the John F

DAE54R67-1123917

Kennedy Assassination Records Collection Act of 1992 (44-USC 2107 Hotel.

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Date:

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TO:

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ATTENTION:

SAC, WEO

(9-2065) (P)

FBI LABORATORY

IDENTIFICATION

DIVISION

ALLEGED THREATS TO GOVERNMENTS

OF SPAIN, MEXICO, ENGLAND AND

JAPAN®

POSSIBLE EXTORTION

(00: MM)

6806-209804

COPY & SPECASTAR

FOR LAb AG

Butel to WFO 6/8/68.

pose to bureau capetoned as above, 618/68: 1

On 6/10/68, MI. ALBERTO BECERRA SIERRA, Minister,

Mexican Embassy, 2829 16th Street, NW, Washington, D.C.,

phone AD 4-6000, advised he was in possession of an

envelope postmarked Miami, Florida, and received at the

Embassy 6/10/68. Mr. BECERRA SIERRA felt that the

threatening communications were contained in this envelope.

On 6/10/68, MI. BECERRA SIERRA was interviewed

and he requested that the interviewing agents open the

envelope which he thought contained the threats. The

envelope was opened and contained therein were three

Western Union telegram forms which contained a typewritten

massage in the Spanish language.

The contents of

each of

Bureau (Enc 4)

2

- Miami

REC 6 9-

48130 2

1 - WFO

UN 1219680 4

JFC: ssb

(7)

AIRTEL

XEROX

SUN 12 1968

Approyed 24 196

Special Agent in Charge

ALL INFORMATION CONTAINER TIA

HEREIN

SATE

6/5/83

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UNRECORDED COPY FILED TE

DocId: 32287590 Page 2

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## Page 3

Released under the John F. Kennedy Assassination Records Collection Act of 1992 (44 USC 2107 Hote).

DÂTE: 11-11-2017

WFO 9-2065

No. 3 Western Union telegram dated 6/6/68,

to the Honorable GUSTAVO DIAZ ORDAZ, Palacio de Gobierno,

Mexico, D.F.:

"Disregarding the petitions of the Cuban people,

it obliges us to give an ultimatum of war against your

Government unless you suspend all commerce with the Cuban

Communists regime. If you do not do this, you will be

the one responsible for the Mexican ships and planes that

will be dynamited. To avoid further mishaps, don't

make the mistake of under estimating this advice from

Cuban power.

Signed ERNESTO

Delegate General

Cuban Power"

The envelope in which the above described

telegram forms were received is postmarked Miami, Florida,

and dated 6/7/68., It is addressed "The Honorable

Ambassador of Estados Unidos de México to the United States,

Mexican Embassy, Washington, D.C."

Mr. SIERRA advised that only he handled the

enclosed envelope and he further advised that he has been

fingerprinted in the past by the U.S. Immigration Service.

SIERRA further advised that the MPD is affording

protection to the Mexican Embassy.

Intelligence Division, MPD, was advised of the

above information.

ENCLOSURES TO BUREAU

One envelope and three telegrams contained therein.

3

9-41813012

DocId: 32287590 Page 3

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