A wanted bulletin and copies of letters sent to the San Francisco Chronicle by the Zodiac Killer.
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Detectives still trying to identify Northern California's infamous Zodiac Killer who targeted victims in the late 1960s and taunted investigators with letters say they hope to try the same DNA tracing technology recently used to arrest a suspect in another string of cold-case serial slayings – those blamed on the Golden State Killer.Several months ago, the Vallejo Police Department sent two letters written by the Zodiac Killer to a private lab in hopes of finding his DNA on the back of the stamps or envelope flaps that may have been licked. Poyser said he hopes a full DNA profile will be found that will enable detectives to try the same DNA sleuthing techniques that were used to arrest Joseph DeAngelo last month.Poyser said recent advances in DNA testing prompted investigators to seek a match on two of the killer's letters.
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