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FBI Date: 6/23/74 too Wi) i 7 Transmit “fe in _ . . WY, , {Type in plaintext or code} Gt Vic AIRTEL AIR MAIL | re. 7s, r ae (Priority) j \ mee Le ee ee ee bee hfe 7 TO: DIRECTOR, FBI (7~15200) ATIN: GID & INTD a on TE, ° .. . FBI LABORATORY " FROM; ‘SAC, LOS ANGELES (7-1627) eo SUBJECT :(_HEARNAP > 7 qTuOGLTLLS NU]. 00r SF oe | ie | 1548 RE: THREATS PURPORTEDLY FROM SIA . oN , Enclosed for the Bureau 4s original letter and envelope Vis received by KNX Radio, Los Angeles, California, Two xerox copies of the letter are being provided to the Bureau and San Francisco Division, GEORGE FISHER, Editor in Charge, KNX Radio News, CBS 6121 Sunset Boulevard, provided this letter, which was received at their offices, The letter was received in an envelope via internal inter-departmental mail. The envelope bears the N na&ation "News Room." It appears the envelope did not go through ) the U.S. Mail since there are no stamps or postmarks on it. FISHER advised that it appears some unknown party slid the envelope under a locked door at the front of their building and then the letter was found by a security guard at approximate 11:00 poem. on 5/31/74. t} Tv PAT AOTIOS rat hs) DEL The letter claims credit for the shooting down of a police helicopter on 5/29/74. Commander PETER HAGEN, Los Angeles Police Department (IAPD), has advised the news media that a i Los Angeles Police helicopter did crash on 5/29/74, injuring two. Police Officers and killing another. HAGEN stated the mishap was not caused by an anti-aircraft missile, as SKS. i -” COPY &S ‘ Col enclosed letter, | “($3.00 ~ C-100 wamiers in| C42 Bureau ests FFEL aa no 7a43 “et. 2 San Francisco (7-855 y( nce1s,-2) ga SUNT 7 1974 ; > 2- Los Angeles - Sr MMW fet. eonematth , HEISE ew By PHOTOGRAPHED LS yb Be ee Daa y Yoov SUN 181974 Ly pT) < Approved: / A "Sent aan M Per. hho? Special Agent in Chatge 74) U.S.Government Printing Office: 1972 — 455-574 - a ee a