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PAGE Four PG 89-115 CLEAR THIS, SHE FELT THERE yAS A POSSIPILITY [__|may HAVE EEEN THE INPIVIDYAL yHO MADE THE TELEPHONE CALL ON DECEMBER é, 1976. ADMINISTRATIVE: . ; 7 REBUTEL CALL TO PITTSBURGH DECEMBER 7, 1976. bé . bIC PITTSBURGH FILES ARE NEGATIVE WITH RESPECT TO SUSPECT,,. [ PITTSBURGH WILL CONDUCT APPROPRIATE INVESTI- GATION TO FuRTHER IDENTIFY] AND TO RESOLVE BELIEF BY SEVERAL JCHNSTOYN RESIDENTS THAT[_—_|MAY HAVE MENTAL PROBLEMS. NO INTERVIEW OF [ WILL BE CONDUCTED UNTIL THIS INVESTIGATION HAS BEEN COMPLETED.. CONGRESSMAN MURTHA'S JOHNSTOWN, PA., OFFICE HAS BEEN ALERTED TC POSSIBILITY THAT THREATENING LETTER FROM UNSUB MAY BE RECEIVED IN NEXT DaY OR: TyO AND THAT IF THIS IS THE CASE, THAT SUCH LETTER SHOULD BE CAREFULLY PROTECTED FOR FBI | LABORATORY EXAMINATION FEIHo IS REQUESTED TO ALERT CONGRESSMAN MURTHA'S WASHINGTON, Es Coy OFFICE TC POSSIBLE RECEIPT OF THIS THREATENING LETTER LHM FOLLOWS. END BT