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DNA advances credited in arrest in 1975 cold-case murder

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LANCASTER, Pa. — Authorities have announced an arrest in the stabbing death of a 19-year-old woman in Pennsylvania almost a half-century ago, crediting advances in DNA technology and genetic genealogical research.

Lancaster County prosecutors and Manor Township police said Monday that a criminal homicide charge had been filed against 68-year-old David Sinopoli in the December 1975 murder of Lindy Sue Beichler.

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District Attorney Heather Adams said the case was solved with DNA “and specifically DNA genealogy, and quite honestly without that I don’t know that we would have ever solved it.”

Sinopoli was arrested Sunday and held without bail.

Court documents don’t list a defense attorney.

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