Several sources report new charges against alleged murderer Rex Heuermann

Multiple sources told Newsday that suspected Gilgo Beach serial killer Rex A. Heuermann is expected back in court later this week to face new charges related to another murder, multiple sources told him.

Heuermann, 60, will appear for arraignment before state Supreme Court Judge Timothy Mazzei in Riverhead on Thursday, the same sources said.

The new charges came weeks after Gilgo Beach Task Force investigators conducted a search of an area of ​​Manorville where the partial remains of two Gilgo Beach victims — Jessica Taylor and Valerie Mack — were found more than two decades ago, and days after Gilgo investigators completed a second search of Heuermann's Massapequa Park home.

Sources declined to say what new charges Heuermann faces. Suffolk County District Attorney Ray Tierney and Heuermann's defense attorney Michael J. Brown declined comment.

Heuermann had previously pleaded not guilty in the deaths of four women – Megan Waterman, Melissa Barthelemy, Amber Lynn Costello and Maureen Brainard-Barnes – who were the first of 10 sets of remains found close to each other along Ocean Parkway between late fall 2010 and spring 2011.

Heuermann, an architect with an office on Fifth Avenue in Manhattan, has been held without bail since his arrest on July 13. He is charged with first- and second-degree murder in connection with the killings of Waterman, Barthelemy and Costello. In January, he was charged with second-degree murder in connection with the killing of Brainard-Barnes. He is scheduled to appear in court again on June 18.

According to authorities, all four women were sex workers.

Prosecutors believe Heuermann acted alone in the first four murders he is accused of and that the cause of death for all of the women was “lethal violence.” Their bodies were found naked and bound and they were contacted via disposable cell phones that match Heuermann's whereabouts, prosecutors said. According to prosecutors, five hairs were found in three of the four bodies that can be linked to Heuermann or a family member.

The investigation into six other sets of remains discovered near Gilgo Beach in March and April 2011 is still ongoing, Tierney said.

“Indictments give prosecutors an opportunity to speak,” Tierney said on April 29.

Unlike the four murders Heuermann was previously charged with, both Taylor, a sex worker who had lived for a time in New York City, and Mack, a sex worker from New Jersey, were dismembered and their remains scattered about a mile apart along the same road in Manorville and in Gilgo Beach. The earlier discovery of Taylor's remains along Halsey Manor Road dates to July 2003. Mack was found there in November 2000.

Karen Vergata, a sex worker from New York City, was also dismembered in 1996; her remains were found near Gilgo Beach and Fire Island.

Three other people whose remains were found along Ocean Parkway have not been identified. They are a woman and a toddler whose DNA shows a relationship, and an Asian man.

Each of these discoveries was made as Suffolk police searched for Shannan Gilbert, whose body was also found in the area in December 2011. However, police say it has no connection to what became known as the “Long Island Serial Killer” case.

According to the public prosecutor's office, Heuermann had hundreds of contacts with sex workers in the years before his arrest.

He was linked to the crime primarily through cellphone data, disposable cellphone records and DNA evidence that linked him to the women and the location where the bodies were found, prosecutors said. A witness connected to Costello's disappearance also provided a description of a truck linked to Heuermann that helped identify him as a suspect and was later recovered from his brother's property in South Carolina, prosecutors said.

A cheek swab obtained by court order from Heuermann since he was in custody matched a mitochondrial DNA profile that authorities monitoring Heuermann had created from a pizza crust and a used napkin allegedly discarded in Manhattan, prosecutors said.

According to prosecutors, it could not be ruled out that the mitochondrial DNA profile created from the pizza and the napkin matched a hair found at the bottom of a burlap bag used to “hold and transport” Waterman's remains.

In court filings in March, prosecutors said they gave Heuermann's defense 12 terabytes of data, including a transcript of the grand jury presentation, 85 pieces of grand jury evidence, autopsy reports, crime scene and forensic photos, search warrants and affidavits. Prosecutors said the defense also received records from the Suffolk County Police Department and its crime lab, as well as records from outside labs.

At Heuermann's most recent court appearance in April, Nicholas Santomartino, assistant district attorney for Tierney and Suffolk, said prosecutors had also recently turned over nearly 400 complete tips, totaling more than 7,000 additional persons of interest in the 13-year investigation.

Police used sniffer dogs during their nine-day search of thousands of acres of wooded land in Manorville in April and early May. The most recent search of Heuermann's home, in which a lawyer for his family focused on the basement area, was completed on May 26 after six days. A search of his home in July lasted 12 days.

Mazzei has stated that he would like to have the evidence in this case completed by the end of July.