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Gilgo Beach serial killer case a key test in use of advanced DNA techniques in criminal trials

The court may set a precedent by admitting whole genome sequencing, a technique used to analyze highly degraded DNA, in a case involving seven victims, officials said.

  • A state judge is weighing whether to admit Astrea Forensics' whole genome sequencing evidence into Rex Heuermann's trial at a Wednesday hearing in Riverhead, New York.
  • Facing degraded evidence, investigators sought new methods that years ago led Long Island law enforcement to use Astrea Forensics, California lab, to analyze rootless hairs found with victims' remains.
  • Astrea Forensics reconstructs full genomes from tiny DNA fragments and identified hairs recovered from victims, while Mitotyping Technologies also linked hairs to Heuermann or family members.
  • If admitted, the ruling would set a New York precedent by allowing whole-genome sequencing, combined with cellphone call and tracking data, to strongly implicate Rex Heuermann in the killings.
  • Defense experts say the methods are prejudicial and unvalidated, while prosecutors and commentators defend Astrea, acknowledging some mathematical concerns but affirming the lab's techniques.
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Gilgo Beach serial killer case a key test in use of advanced DNA techniques in criminal trials

The case against Long Island’s suspected Gilgo Beach serial killer has emerged as a potentially precedent-setting battleground in the use of advanced DNA techniques in criminal cases.

·United States
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Winnipeg Free Press broke the news in Winnipeg, Canada on Sunday, August 31, 2025.
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