Rex Heuermann cries ‘I didn’t do this’ as he appears in court on Gilgo Beach murder charges

‘The only thing I can tell you that he did say, as he was in tears, was “I didn’t do this,”’ Mr Heuermann’s attorney said

Gilgo Beach murders suspect Rex Heuermann appeared in court on Friday as he insisted on his innocence.

Mr Heuermann, 59, is accused of murdering Melissa Barthelemy, Megan Waterman, and Amber Costello — all women in their 20s who were working sex workers and who disappeared in the Massapequa Park area in Long Island before their bodies were found during a separate missing person investigation in 2010.

The architect, a married father of two who lives in Massapequa Park and works in Manhattan, reportedly broke down in tears during his court appearance. He pleaded not guilty to three counts of first-degree murder and three of second-degree murder.

“We just got appointed on this case. There’s not much I can tell you folks at this point in time,” his attorney, Michael Brown, told reporters, according to NBC. “I will say to you folks that it’s extremely circumstantial in nature. In terms of speaking to my client, the only thing I can tell you that he did say, as he was in tears, was ‘I didn’t do this.’”

Mr Heuermann was walked out of the courthouse in handcuffs and wearing a polo shirt and khaki pants. He was held without bail as prosecutors had previously sought, citing his recent searches for “sadistic materials, child pornography, images of the victims and their relatives.”

Mr Heuermann is also the prime suspect in the murder of Maureen Brainard-Barnes, who is believed to be one of the “Gilgo Four.” Prosecutors noted in the application that records for the burner phones used to contact Brainard-Barnes were not obtained at the time she went missing and no longer exist.

Her body and Barthelemy, Waterman and Castello’s were found within one-quarter mile of each other, similarly positioned and bound in a similar fashion by either belts or tape. The unsolved murders sent fear through the shoreline community of Gilgo Beach but for more than a decade, few developments were made in the case.

Last year, the Suffolk County Police Department, New York State Police, Suffolk County Sheriff’s Office and the FBI revamped the probe into the killings that ultimately led to Mr Heuermann’s bombshell arrest outside his Midtown office on Thursday.

Rex Heuermann was arrested on Thursday night in connection with the Gilgo Beach murders (Fox 5/YouTube)

A bail application released by the Suffolk County District Attorney revealed that Mr Heuermann was linked to the serial killings through cellphone evidence and surveillance.

Prosecutors have argued that no bail should be set for Mr Heuermann due to his recent searches for “sadistic materials, child pornography, images of the victims and their relatives.”

Mr Heuermann was first linked to the cold case in March 2022 after investigators discovered that a Chevrolet Avalanche registered to him was possibly the one spotted by a witness in Costello’s disappearance.

As law enforcement closed in on him, they served more than 300 subpoenas and search warrants that uncovered cellphone records for burner phones used to arrange meetings with three of the “Gilgo Four” victims before they went missing.

Further analysis also allegedly linked Mr Heuermann to taunting calls made to family members of the victims, according to investigators. The calls were made from the Midtown Manhattan area, where the offices of Mr Heuerman’s architecture business are located.

Among the evidence linking Mr Heuermann to the murders was a hair found on burlap material used to wrap Waterman’s corpse, according to court documents. DNA analysis had not been possible in the early stages of the investigation, but new technology allowed testing in July 2020.

Police remove evidence from home of Long Island serial killer suspect (Patrick Reichart)

A team surveilling Mr Heuermann collected a discarded pizza box that then confirmed a DNA match with the suspect on 12 June.

Records also show that several online accounts under fictitious names linked to Mr Heuermann were used for illegal activities. Mr Heuermann allegedly used those accounts and burner phones to contact women for prostitution services, as well as making chilling online searches.

The searches included sadistic, torture-related pornography, child pornography and disturbing content. Mr Heuermann is also accused of searching “why could law enforcement not trace the calls made by the long island serial killer,” “why hasn’t the long island serial killer been caught” and “new phone technology may be key to break in case.”

A map shows the location of 10 victims’ remains found along Gilgo Beach since 2010 (Reuters)

More forensic analysis revealed that female hairs found in the three crime scene locations belonged to Mr Heuermann’s wife. However, authorities have determined through cellphone records that Mr Heuermann’s wife was out of state when the murders took place.

At the time Barthelemy went missing in July 2009, Mr Heuermann’s wife was in Iceland. She visited Maryland around the time Waterman disappeared in June 2010, and also travelled to New Jersey when Costello was last seen in September of that year.

“It is likely that the burlap, tape, vehicle(s) or other instrumentalities utilized in furtherance of these murders came from Defendant Heuermann’s residence, where his wife also resides, or was transferred from his clothing,” prosecutors explained.