A Suffolk County Supreme Court judge ruled Wednesday that hair and DNA evidence connecting alleged Gilgo Beach serial killer Rex A. Heuermann to the slayings of six women will be allowed as evidence at the architect's future trial.

The groundbreaking DNA analysis, which uses techniques and methods that had not been tested in New York courts, had been challenged by Heuermann's defense, which argued the technology was in its "infancy" and could not be relied upon.

Here's everything to know about the evidence, the ruling and what it means for Heuermann's case.

What does the evidence show and how was it obtained?

Prosecutors said a DNA analysis, conducted by Astrea Forensics, a California laboratory, linked Heuermann , his ex-wife Asa Ellerup, and their adult daughter, Victoria Heu

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