(NewsNation) — The attorney for Asa Ellerup, the ex-wife of Long Island serial killer suspect Rex Heuermann, says nuclear DNA technology being introduced at the trial adds new significance to the case.
“Her (Asa) hair, I think Victoria’s hair, and I believe also Rex’s first wife’s hair were found on some of the bodies, including Rex’s,” Robert Macedonio told “NewsNation Live.”
The nuclear DNA that is expected to be introduced at trial derives from some hairs found on the victims that were tied back to Heuremann’s home on Long Island. A couple of those hairs allegedly match up with Ellerup, who has not been charged with wrongdoing.
“It does make the prosecution’s case a little bit stronger in the circumstantial case, because remember, there are no eyewitnesses to this murder,” Macedonio added. “So, it’s all circumstantial phone records, DNA records, and then his forensic diagnosis of his computer with the planning document all leading to Rex.”
Rex Heuermann to face single trial in murder cases
New York State Supreme Justice Timothy Mazzei ruled earlier this week that Heuermann would face a single trial instead of multiple trials after his attorney attempted to break up the cases.
Heuremann is accused of killing Sandra Costilla, Valerie Mack, Jessica Taylor, Maureen Brainard-Barnes, Megan Waterman, Melissa Barthelemy, and Amber Lynn Costello.
Macedonio says the verdict didn’t “come as a surprise” to Ellerup or himself.
“The two new developments we anticipated, those being the outcomes of the two decisions of Justice Mazzei, he acknowledged.
A trial date has not yet been set, but Heuermann is due back in court on Jan. 13, 2026, for a discovery hearing.
Rex Heuermann’s ex-wife still struggling to believe he’s a murderer: Attorney
Macedonio said that despite Ellerup adjusting to her new life in South Carolina, she is still struggling to come to grips with the case being made against her ex-husband.
“She still has a difficult time processing that the man she was married to for 27 years is capable of these horrific crimes,” he said.
“As we see more and more evidence laid out in the courtroom, she’s listening. It’s hard.”
Macedonio added he is not aware of any possible plea deal from Heuremann’s attorney, Mike Brown. However, he said that the motion would be helpful for all parties involved.
“A plea is always beneficial to both sides in the sense that it spares the victims of the horrific details and the gory nature of where the way these young ladies were murdered,” said Macedonio. “And also it spares Rex’s daughter and family of listening to certain items of evidence he may not have there.”