</s>Case Number: 65-LA- 115378 Serial(s): 3-4, 12-13, 28,38 2025 RELEASE UNDER E.O. 14176

Summary  
The documents detail FBI and LAPD investigations into threats against Robert F. Kennedy (RFK) in 1968, including a bomb threat reported to LAPD on May 15, 1968, targeting Valley College during RFK’s speech. A caller described an individual’s brother as “crazy” and stated he had left with explosives in a suitcase. LAPD responded but found no evidence of the threat. Separate records mention Irving Satz reporting William Hall’s threats against RFK in Newport Beach, California, around May 14–15, 1968. Clyda MANGRUM, an FBI retiree, retained classified materials including Intelligence Summary Booklets (1965–1969), Office of Naval Intelligence Counterintelligence Briefs, and evidence tied to Sirhan Sirhan’s assassination of RFK. The FBI assessed these items as historically valuable but not currently threatening, leading to case closure in October 1990. A November 1968 FBI request sought typewriter analysis to link a letter signed by “Sharif B. Shiran” to Sirhan Sirhan’s actions.  

A separate rough draft of police notes dated June 1 and June 2, 1967–1968, references investigations into RFK’s assassination. Asst. Chief of Police BEN BIGGERS in Corona, California, noted that LAPD officers Sgt. CHARLES COLLINS and Det. FRANK PATCHETT conducted inquiries around the time of Sen. KENNEDY’s shooting. A “register of police officers” listed names including SIRIAN and STIRHAM (possibly a misspelling), with R. STEWART remaining unidentified. The Range Master maintained a register containing only names, without addresses or additional identifiers. Confusion arose over who signed the register, with STRIHAN mentioned alongside another party in connection to a check cashed locally, linked to media reports.  

Key People  
- **Clyda MANGRUM**: Former FBI Security Squad 1 employee who retained classified materials post-retirement.  
- **Sirhan Sirhan**: Identified as RFK’s assassin; documents include evidence linking him to the 1968 assassination.  
- **Irving Satz**: Liquor store employee who reported William Hall’s threats against RFK in Newport Beach.  
- **William Hall**: Allegedly planned to assassinate RFK, per Satz’s account.  
- **Ben Biggers**: Asst. Chief of Police, Corona, California; reported on LAPD investigations into RFK’s assassination.  
- **Charles Collins** and **Frank Patchett**: LAPD officers conducting inquiries around the time of Sen. KENNEDY’s shooting.  
- **SIRIAN** and **STIRHAM**: Names appearing on a police register linked to the assassination investigation (possibly misspellings of Sirhan).  
- **R. STEWART**: Unidentified individual associated with the event.  
- **Bill Marks**: RangeMaster in Corona, California; present for one day but not connected to the shooting.  

Key Locations  
- **Valley College**, Los Angeles: Site of RFK’s speech targeted in a bomb threat.  
- **Newport Beach, California**: Location of Irving Satz’s liquor store where William Hall allegedly made threats against RFK.  
- **Los Angeles, California**: Headquarters for LAPD and FBI operations; MANGRUM’s residence and FBI offices.  
- **Corona, California**: Home to Asst. Chief Ben Biggers and RangeMaster’s register location.  
- **San Dimas, California**: Residence of Mariana and Joe Willis, who discovered MANGRUM’s belongings.  

Key Events  
- **May 15, 1968**: Bomb threat reported to LAPD targeting Valley College during RFK’s speech; no evidence found.  
- **May 14–15, 1968**: Irving Satz reported William Hall’s threats against RFK in Newport Beach.  
- **October 1990**: FBI investigation into Clyda MANGRUM’s retained classified materials led to case closure due to lack of current national security threat.  
- **November 1968**: FBI requested typewriter analysis to link a letter signed by “Sharif B. Shiran” to Sirhan Sirhan’s assassination.  
- **June 1–2, 1967–1968**: Rough draft police notes referencing LAPD officers’ investigations into RFK’s assassination; confusion over names on a register (SIRIAN, STIRHAM, STRIHAN).  

Key Organizations  
- **Federal Bureau of Investigation (FBI)**: Conducted investigations into MANGRUM’s materials and RFK-related threats.  
- **Los Angeles Police Department (LAPD)**: Responded to bomb threat calls; officers Collins and Patchett investigated RFK’s assassination.  
- **Secret Service**: Notified of threats against RFK; coordinated with FBI and campaign teams.  
- **Kennedy for President Campaign Committee**: Informed of threats against RFK via Art Selzer.  
- **Corona Police Department**: Mentions of Asst. Chief Ben Biggers and RangeMaster’s register.

RFK Declassified Files

65-la-115378_sec_000_ser_3_4_12_13_28_38.pdf

Document Summary

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