Suspected serial killer Rex Heuermann is expected to appear in court today to face charges related to two other murders, sources say.

Suspected Gilgo Beach serial killer Rex A. Heuermann has been charged with the murder of two other women, including a Queens resident whose remains were found in Southampton Town more than 30 years ago and who had no only recently been involved in the Gilgo Beach investigation, according to sources. tell Newsday.

Heuermann, 60, of Massapequa Park, will be arraigned today before state Supreme Court Justice Timothy Mazzei in Riverhead for the July 2003 dismemberment death of Jessica Taylor and the death of Sandra Costilla in November 1993, whose murder Suffolk police and prosecutors have long linked to a felony. different suspect.

Newsday first reported the new indictment, which remains under seal, on Monday. Suffolk County Prosecutor Ray Tierney declined to comment on the indictment, confirming only that Heuermann will return to court at 9:30 a.m. Thursday and will be joined by other law enforcement for a briefing. press at 11:00 a.m.

Heuermann, who was 30 when Costilla's remains were found on Cove Road in the North Sea on November 20, 1993, had never been charged with a murder committed before 2007. He was arrested in July and charged with the death of three people. women whose remains were found near Gilgo Beach in 2010. He was charged with an additional death in January.

Taylor and Costilla also represent the first alleged victims linked to Heuermann whose remains were discovered somewhere other than Ocean Parkway, expanding the area in which he allegedly dumped the bodies by more than 40 miles.

The four previous murders he was charged with also did not include dismemberment, as was the case for Taylor, whose torso was found in Manorville days after his disappearance before his head, hands and front -arms were found in March 2011 along Ocean Parkway near Cedar Beach. .

Costilla, who also used the last name Cutello and was 28 when she was killed, lived on Gates Avenue in Ridgewood, Queens until about 1992, police said at the time. She also previously lived in an apartment in Flushing, Queens, according to property records.

Costilla's death had not been linked to the Gilgo Beach investigation until K-9 units spent five hours in April searching the wooded North Sea property where his remains were found.

Instead, as early as 1994, police had said that Costilla's death may have been linked to the murders of Colleen McNamee and Rita Tangredi, a narrative that continued until the 2014 arrest of John Bittrolff, who was ultimately convicted of the other two murders.

Costilla was strangled and may have been raped, police said shortly after his remains were discovered. Similar to McNamee and Tangredi, his body was found naked with his arms behind his back and wood chips present at the crime scene, said prosecutors who tried Bittrolff's case. But DNA linking Bittrolff to the other two victims was not present at Costilla's scene, former assistant district attorney Robert Biancavilla told reporters in 2014.

Detectives tried to get a confession from Bittrolff about Costilla's murder, according to court records, by showing him his headshot and a photograph of his crime scene.

Ultimately, Bittrolff was never charged in Costilla's death, and he is currently serving a 50-year-to-life prison sentence at Clinton Correctional Center in upstate Dannemora. He is appealing his conviction.

In 1993, police asked the public for help in locating Costilla's family, saying they needed more information to aid the investigation. Unlike the other alleged victims in this case, law enforcement never described Costilla as a sex worker.

Taylor grew up in Poughkeepsie and lived in New York before disappearing. She was 20 when she was reported missing, having last been seen at the Port Authority bus terminal in Manhattan.

Taylor was a sex worker who was in a relationship with a man believed to be her pimp and boyfriend, although her family believes she had run away from the man shortly before her death. His remains were identified in part by a tattoo that included the man's name.

Taylor's torso was found near Halsey Manor Lane in Manorville, about a mile south of where Valerie Mack's remains were discovered, near the Long Island Expressway. Mack's death is not part of the new indictment, sources said.

Gilgo Beach Task Force investigators searched the part of Manorville where Taylor and Mack's remains were discovered for nine days in April. Tierney called the search, along with an additional six-day search of Heuermann's home, a “necessary investigative step.”

“On Thursday you will see the fruits of this investigation,” Tierney told reporters in Riverhead on Monday.

“Once the legal process is completed, we will have more comments,” the prosecutor said.

Heuermann's defense attorney, Michael J. Brown, of Central Islip, declined to comment the day before the arraignment.

Heuermann previously pleaded not guilty to the deaths of four women – Megan Waterman, Melissa Barthelemy, Amber Lynn Costello and Maureen Brainard-Barnes – who were the first of ten sets of remains found in close proximity to each other along Ocean Parkway between late fall 2010 and early spring 2011.

The Manhattan architect has been held without bail since his July 13 arrest on first- and second-degree murder charges in the killings of Waterman, Barthelemy and Costello. He was charged in January with second-degree murder for Brainard-Barnes' killing. All four women worked as sex workers, and Heuermann had hundreds of contacts with sex workers in the years before his arrest, prosecutors said.

Prosecutors believe Heuermann acted alone in the first four murders he was charged with and that each woman's cause of death was “homicidal violence.” Their bodies were found naked and tied up, and they were contacted by cell phones matching Heuermann's location, prosecutors said. Five hairs linked to Heuermann or a family member were found on three of the four sets of remains, according to prosecutors.

Heuermann was linked to the case primarily through cell site data, burner phone records and DNA evidence linking him to the women and where the bodies were found, prosecutors said. A witness to Costello's disappearance also provided a description of a truck linked to Heuermann, which helped establish him as a suspect and was later recovered at his brother's property in South Carolina, prosecutors said .

A cheek swab, obtained from Heuermann by court order since his detention, matched a mitochondrial DNA profile that authorities monitoring Heuermann had developed from a pizza crust and a used napkin believed to have been piers in Manhattan, prosecutors said.

The mitochondrial DNA profile developed from the pizza and napkin could not be ruled out as a match to a hair found at the bottom of the burlap used to “hold and transport” Waterman's remains, prosecutors say .

Prosecutors said in court papers filed in March that they turned over 12 terabytes of data to Heuermann's defense, including a transcript of the grand jury presentment, 85 grand jury exhibits, autopsy reports , photographs of the crime scene and medical examiner's office, search warrants. and affidavits. Prosecutors said the defense also received documents from the Suffolk County Police Department and its crime lab, as well as outside lab documents.

During Heuermann's last court appearance in April, Tierney and Suffolk Deputy District Attorney Nicholas Santomartino said prosecutors also recently turned over nearly 400 complete leads, a total of more than 7,000 other people of interest in the investigation which lasted 13 years.

With Michael O'Keeffe, Nicole Fuller and Anthony M. DeStefano