Arthur leigh allen has the dubious honour of being the most infamous suspect in the zodiac killer case.

Zodiac killer suspects arthur allen. Arthur leigh allen december 18 1933 august 26 1992 was the prime suspect of law enforcement in the case for the zodiac killer. Allen became publicly known as a zodiac suspect shortly after the release of zodiac a book authored by robert graysmith. The main reasoning behind this is that he was the named suspect in a best selling book on the murders which was then the basis of a hit movie. Allen was cleared through a comparison of dna fingerprints palm prints and handwriting.

Allen had been interviewed by police from the early days of the zodiac investigations and was the subject of several search warrants over a 20 year period.

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