Neighbors of Gilgo Beach serial killer suspect recount chilling encounters with ‘harassing’ Rex Heuermann – who was overheard at the end of his ride talking about ‘the girls’ threatening to cut ties

Neighbors of the Gilgo Beach serial killer suspect have said he was “harassing” and that he was once caught with “the girls.”

Jimmy Mack, who lives a few blocks from Rex Heuermann’s “dungeon-like” home, revealed to DailyMail.com his encounters with the suspected killer.

He claimed he once caught him chatting about “the girls” at the end of his driveway while he was drunk and thought no one was listening.

Mack said that when he asked Heuermann what he was doing, he shot him over his car and threatened to cut his tires.

Meanwhile, another neighbor said they found six-foot Heuermann “intimidating” and once walked past him while he was working in his garage and he didn’t even look up.

Heuermann has been arrested and charged with the murder of three of the ‘Gilgo Four’.

Jimmy Mack, (left) who lives a few blocks from Rex Heuermann’s (right) “dungeon-like” home, revealed to DailyMail.com his encounters with the suspected killer

Police searched the premises Thursday for the seventh day for ‘trophies’ that may be linked to the victims

The architect lived with his wife Asa Ellerup in a “dungeon-like” Massapequa Park home just 18 miles from Gilgo Beach

Mack, 51, a trucking company owner living with his wife and three stepchildren, recalled a terrifying encounter with Heuermann outside his Long Island home.

Heuermann was walking home from the LIRR station past Mack’s house on March 2, a regular route for the architect, when a confrontation broke out between the men.

Mack was smoking a cigarette on his front porch at about 10 p.m. and heard a man Heuermann talking, he told DailyMail.com.

“I’m sitting on my porch and he doesn’t see me but I hear him say ‘oh here we are again… I told them I told the girls.”

Mack said Heuermann didn’t realize he was there and seemed startled. He seemed drunk and kept babbling to himself at the end of Mack’s driveway. Mack explained that he asked him, “brother, are you talking to my house?”

Heuermann replied, “Are you the jerk who owns this car?” aggressively adding that he would return in 15 minutes to cut his tires.

Alarmed, Mack said “either we settle our affairs now or I never see you again” and chased the man down his driveway.

Mack then followed his neighbor in his car and recalled feeling “something wasn’t right.” I need to know where this man lives.’

Mack said the confrontation and air of unease he felt meant he “knew something was up for me to get back in my car and follow this guy to his house.”

Law enforcement officers load a pair of skates into a truck from Rex Heuermann’s home on Thursday

The first victim, Melissa Barthelemy, 24, was discovered by Suffolk County Police on December 11, 2010. The body of Megan Waterman, 22, was found two days later

Maureen Brainard-Barnes was 25 years old when she went missing (left). Amber Lynn Costello was 27 years old. Their bodies were found near Barthelemy’s the same day

In addition to his cluttered home, Heuermann owned two storage units in Amityville. They were searched yesterday and today

He also told his neighbors about the confrontation and warned them where the man lived.

He remembers telling his friends and family ‘if anything happens to this house or anything, it’s this guy’ adding ‘that much I knew something was wrong with this’.

Another neighbor, who lives around the corner from Heuerman and wishes to remain anonymous, says “he was always tinkering in the garage or outside and seemed very intimidating.”

One time he walked by and saw Heuermann building a chair while wearing a leather apron and barely looked up.

The dog was also often in the backyard, sometimes barking incessantly, the neighbor told DailyMail.com.

Police believe at least one of the Gilgo Beach victims was murdered at the serial killer’s Long Island home.

South Carolina detectives are now reviewing a nearly decade-old missing person case to see if Heuermann may have been involved, DailyMail.com revealed exclusively on Wednesday.

Police in Rock Hill, just 20 miles from where Heuermann purchased a 18-acre wild piece of land, confirmed they are reviewing the case of Aaliyah Bell Hall, who went missing in 2014.

Rex Heuermann bought 18 acres of vacant land 20 miles from where Aaliyah went missing. Now the family hopes that the police will search it to see if any bodies are buried

Land registry records showed Rex Heuermann bought $154,000 worth of land in Chester in 2021, with neighbors saying he planned to create a “compound” with his brother who lives on the property

A spokesman for the Rock Hill Police Department told DailyMail.com: “We have not been contacted by any other agencies. But we are reviewing the case and investigating possible links or matching timeframes regarding Aaliyah Bell’s disappearance with Rex Heuermann.”

Law enforcement sources also told CBS NEWS that detectives are now investigating unsolved murders across the country to see if they are linked to Heuermann, 59. Police say he was behind the 2010 deaths of three sex workers who were buried at Giglo Beach. He is the prime suspect in a fourth murder.

Police searched the property for the seventh day on Thursday for “trophies” that may be linked to the victims. Investigators are also looking into his share of time in Las Vegas and a property he owned in South Carolina.

DailyMail.com previously spotted a detective carrying a note containing some of the evidence found, including a rope kept in a safe and handcuff keys on a shelf under a workbench.

Investigators also searched two storage units connected to Heuermann and several boxes were spotted outside one on Wednesday. Blue sails and white tents have been erected outside the unit to close off the scene.

Police have also revealed that Heuermann may have ties to New Jersey’s Atlantic City, and they’ve expanded their investigation to a fourth state.

Police are investigating whether he operated in the area and interviewed detained sex workers who interacted with him.

“He had contacted them for sex,” Suffolk County Sheriff’s Department Sheriff Errol Toulon told Good Morning America about the prostitutes that officials have been talking to. “They took the calls, but didn’t set him up.”

The update from law enforcement comes after the Gilgo Beach murders were revealed to be similar to murders in the area by the “Eastbound Strangler,” who killed four sex workers by strangling them near Atlantic City.