Accused Gilgo Beach Serial Killer Challenges DNA Evidence, Seeks Separate Trials

Accused Gilgo Beach serial killer Rex Heuermann appeared in a Long Island courtroom as his defense team formally filed motions challenging the case against him.

Heuermann, an architect and father of two from Massapequa Park, is charged with seven of at least ten murders tied to the infamous Gilgo Beach killings. His legal team is pushing to separate the charges into multiple trials and is contesting key forensic evidence that prosecutors plan to use.

His attorney, Michael Brown, filed a motion requesting that the seven murder charges be split into five separate trials.

The motion proposes that the first three victims be tried together, while the remaining four be handled individually. Brown argued that keeping all charges in one trial could unfairly influence a jury.

"When you have count after count, charge after charge, it leads a jury despite a judge's instruction, it leads a jury to say you know what there's so much there," Brown stated. "He may not be guilty of this but maybe he's guilty of that and it's what we call accumulative effect."

The defense is also challenging DNA evidence obtained from rootless hairs found at six of the crime scenes. Attorney Danielle Coysh argued that the forensic method used to analyze the hairs has not been widely accepted in the scientific community, making it inadmissible under state law.

"It's never been the subject of any judicial testing or any standard so this is the first time in the United States that it will be done," Coysh said.

Suffolk County District Attorney Ray Tierney pushed back on the defense's claims, stating that the DNA method—performed by Astrea Forensics, a California-based lab—is scientifically valid.

"I would submit that this is the next generation of the evolution of the technology," Tierney said. "It's exciting to be at the forefront of that and we look forward to proving the scientific acceptance and effectiveness of this technology."

Tierney has led the charge against Heuermann, working with the Gilgo Beach Task Force to bring charges against him.

The latest development in the case comes after Heuermann was recently charged in the murder of Valerie Mack. Her remains were first discovered by a hunter’s dog in 2000 in a wooded area of Manorville, Long Island. Mack’s decapitated body was found inside a black plastic bag bound with rope and wrapped in duct tape. Both her hands and one of her legs were severed, according to court documents. The rest of her remains surfaced more than a decade later, in April 2011, near Gilgo Beach.

Heuermann has pleaded not guilty to Mack’s murder, as well as the killings of Melissa Barthelemy, Megan Waterman, Maureen Brainard-Barnes, Amber Costello, Jessica Taylor, and Sandra Costilla. Authorities have linked the murders to a string of victims found along Ocean Parkway between 1993 and 2010.

His next court appearance is set for February 18. Judge Timothy Mazzei indicated that a hearing on the DNA evidence, known as a Frye hearing, will likely take place in late February or early March.

Heuermann has denied all charges.

#GilgoBeach #RexHeuermann #TrueCrime #ColdCase #DNAEvidence #JusticeForVictims #LongIsland

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Accused Gilgo Beach Serial Killer Challenges DNA Evidence, Seeks Separate Trials

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