09/18/2025 - US Expert Witness News: New Developments Shake up the Gilgo Beach Murder Case


New evidence shakes up the Gilgo Beach murder case

The string of disappearances that ended up with bodies on Gilgo Beach has haunted Long Island for almost ten years. In July 2023 police finally arrested a man they think did it – Rex Heuermann. He used to work as a lifeguard at Jones Beach and later as an architect in Manhattan. The arrest didn’t solve everything. It opened the door to a wave of fresh forensic finds that could change how the case is tried. Most striking is a routine beach‑clean‑up at Jones Beach, a few miles north of Gilgo, that turned up items that seem to belong to the earliest victims. Those objects, rolled together with a judge’s go‑ahead for new DNA testing, make the prosecutor’s story stronger, though they also expose lingering doubts about cause and effect.

The garbage‑sweep happened on a cool September morning. Workers digging a couple of feet into the sand pulled up a leather glove soaked in blood, a few old purses and torn bits of women’s clothing from the late‑80s‑early‑90s. The clothes had ripped buttons and odd cuts that look like they were ripped off in a fight. Forensic experts said the fabric had faded exactly like something that spent years under salty water, matching the time of the first Gilgo murders. Heuermann’s old job at Jones Beach gave him a lot of knowledge about that shoreline. That overlap gives detectives a plausible link between the suspect and the spot where the new items were found.

New York Post reports said the items were caught less than two months after Heuermann was taken into custody, and police quickly told the state what they had. Detectives started a careful chain‑of‑custody, looking to see if DNA, fibers or other tiny clues from the glove, purses and clothing could be tied straight to Heuermann or people close to him. One senior officer warned “it could be a coincidence,” but the closeness of Jones Beach to the main crime scene and the timing of the gear pushes prosecutors to treat the find as more than a side note.

At the same time the defense filed a high‑profile “Hail‑Mary” move trying to block DNA proof that came from single hair strands taken off the items. On Wednesday Judge Timothy Mazzei said no, the motion can’t stand. He leaned on expert testimony, peer‑reviewed studies and past court acceptances of the same tech in other states. In his written ruling he said scientists broadly accept the method as reliable for matching tiny biological traces to a person’s DNA. The prosecution used that same work to claim the new DNA testing shows Heuermann was present at six of the victims’ places, widening the evidence beyond the first three murders.

Defense lawyer Michael Brown kept pushing back on the hair evidence. He argued the method is still new in New York courts, that a lone hair is weak proof, and that the tests also match Heuermann’s ex‑wife, Asa Ellerup, and his daughter, Victoria Heuermann, who never got pulled into the case. Brown says those mixed results could cloud the picture instead of clearing it, and he wants the court to drop the hair evidence as unfairly prejudicial and speculative.

Suffolk County District Attorney Ray Tierney fired back, “We win. The evidence stays. Trial time.” He added, “Science was on our side, that’s why we prevailed.” His words rippled through the prosecutor’s office, sparking a quick celebration and a push to move fast once a trial date is set. No exact date is out yet, but the DA hinted the next year could be the earliest.

The procedural fight goes on. The defense wants the case split into several shorter trials, saying one big trial would be too much for jurors and would bias the defendant. Prosecutors argue a single trial is needed to keep the story of a serial‑killer clear and to avoid mixed verdicts. Judge Mazzei slated a hearing on the split request for September 23, when he’ll decide whether the case rolls as one whole or breaks into parts.

Rex Heuermann stays locked up at Riverhead Correctional Facility in Suffolk County, there for more than two years. He keeps pleading not guilty to the murders of seven women while the state piles up the physical items, DNA results and witness statements for a jury.

In summary, the fresh beach finds and the judge’s approval of cutting‑edge DNA work give the prosecution a stronger case that Heuermann built the Gilgo Beach horror. Yet gaps remain: the Jones Beach details could be unrelated, the DNA matches also hit family members, and the still‑open question of how the trial will be organized all add a layer of doubt. As the legal process moves forward, the outcome will not only decide Heuermann’s fate but also test how much the public trusts forensic science to solve long, tangled homicide puzzles. The coming trial, therefore, stands as a big test for both scientific testimony and the justice system’s ability to blend new proof into a fair, clear trial.

Expert Witnesses that are Expected to Testify

Expert Name Affiliation / Role Subject-Matter of Testimony / Issues Raised
Nathaniel Adams Defense (systems engineer at Forensic Bioinformatics, Inc.) He is the first expert witness called by the defense. He challenges the reliability of the DNA software IDBGEM, claiming it can misread genotype data and noting that the software has been updated many times.

Dr. Richard Edward Green Co-founder of Astrea Forensics Expected to testify for the prosecution. He would present “nuclear DNA information” derived via whole-genome sequencing of rootless hairs from crime scenes. The defense has asked to exclude his testimony, arguing the methods used by his lab are unproven / not generally accepted.

Kelley Harris DNA expert (associate professor, Genome Sciences, University of Washington) Called by the prosecution in a hearing to support the admissibility of advanced DNA methods (whole genome sequencing, etc.), including the methodology used by Astrea. She testified about likelihood ratios, comparing degraded samples, etc.

Dr. Dan Krane Professor at Wright State University, Ohio Testified for the defense, criticizing the statistical analysis used by Astrea Forensics, calling it “wildly and unfairly prejudicial.”

Legal experts / scientific commentators such as William Thompson (professor emeritus of criminology, UC Irvine) and Nathan Lents (biology professor at John Jay College) Not necessarily testifying in court, but offering public expert commentary / peer review regarding the techniques / statistical methods in the case.

https://en.wikipedia.org/wiki/DNA_profiling

https://en.wikipedia.org/wiki/DNA_profiling