article_snippet: A 69-year-old black man who was convicted of participating in the infamous 'zebra murders' in San Francisco, California, in the 1970s was found dead at San Quentin State Prison.
article_snippet: The killing spree was dubbed the 'zebra murders' because of the special Z channel radio band investigators used, the San Francisco Gate reported.
article_snippet: During a six-month murder spree from October 1973 to April 1974. the four men targeted white victims and murdered the majority of white victims with an execution-style shot to the back of the head.
article_snippet: The trial saw 174 witnesses testify and was described as 'San Francisco's longest criminal trial' at the time.
article_snippet: In order to stop the murders, then-Mayor Joe Alioto (pictured announcing the arrests) ordered a city-wide dragnet in San Francisco, Caliornia, to catch the killers .
article_snippet: In order to stop the murders, then-Mayor Joe Alioto ordered a city-wide dragnet to catch the killers.
article_snippet: After getting a tip from an informant, police raided an apartment complex and arrested seven men.
highlights_snippet: Six-month crime spree from October 1973 to April 1974 also injured seven .
  