Rex Heuermann, the prime suspect in the notorious Gilgo Beach killings, is anticipated to be indicted on Thursday on additional murder charges involving two more women, according to multiple law enforcement sources. Heuermann, a former New York architect, has been in custody since July and was previously charged with the murder of four women known as the "Gilgo Four."

The new murder charges stem from an extensive expansion of the investigation into Heuermann following his arrest last summer, reveal law enforcement officials. The victims in question are Jessica Taylor and Valerie Mack. The arrest of Heuermann sparked a media frenzy, finally allaying the long-standing fear within the Gilgo Beach community of a serial killer being responsible for a series of unsolved killings over several decades.

The discovery of at least 11 sets of human remains in Suffolk County, Long Island, including those of Melissa Barthelemy, Megan Waterman, Amber Costello, and Maureen Brainard-Barnes, has directly led to Heuermann being charged with multiple counts of murder. Heuermann is accused of three deaths in 2023 and the death of Brainard-Barnes in January. He has pleaded not guilty to all charges and is currently being held without bail.

Heuermann's defense attorney, Michael Brown, declared in January that his client maintains his innocence and intends to vigorously fight the charges. The investigation has recently led authorities to search locations in Manorville and North Sea on Long Island, where three women's remains were previously found. These searches, as well as the examination of Heuermann's residence earlier this year, have reportedly provided crucial evidence that has propelled the investigation forward.

Police confirmed that Taylor and Mack's remains were discovered in Manorville. Manorville, situated about 40 miles northeast of the Gilgo Beach crime scenes, was the location where partial remains of 24-year-old Mack were found in 2000, with additional remains matching her DNA found on Gilgo Beach in 2011. Partial remains of 20-year-old Taylor were found in Manorville in 2003, and further remains were discovered on Gilgo Beach in 2011.

John Ray, a lawyer representing Taylor's family, commented that he was uncertain if Heuermann is connected to Taylor's death. Meanwhile, police carried out a search in North Sea, approximately 65 miles northeast of Gilgo Beach, as they investigate the unsolved killing of 28-year-old Sandra Costilla, whose body was found in a wooded area of North Sea in 1993. Officials are exploring any possible connection between Costilla's death and Heuermann.

Investigators working on the case believe that there could be more victims, prompting them to expand their investigation, re-examine dump sites, conduct further searches at Heuermann's residence, and review unsolved missing persons cases. One law enforcement official involved in the extensive investigation stated, "We are not near the end of this investigation. We are very much at the beginning."

Following Heuermann's arrest in the summer of 2023, police emphasized that their investigation was far from complete. They focused their attention on Heuermann's Massapequa home, where he had been living quietly with his wife, daughter, and stepson. During a search of the residence, over 280 firearms were found, with more than 40 being illegally possessed, according to authorities.

In addition to the house search, investigators explored properties owned by Heuermann in Las Vegas and South Carolina. The flood of evidence uncovered during the investigation prompted police to carry out another search at the Massapequa residence a few weeks ago, where boxes were seen being removed from the premises. Robert Macedonia, the attorney representing Heuermann's estranged wife Asa Ellerup, confirmed the search warrant.

Despite filing for divorce days after Heuermann's arrest, Ellerup reportedly continues to visit him weekly. A statement released by her attorneys in March stated that she maintains Heuermann's innocence. Additionally, Ellerup expressed her sympathies towards the victims and their families, declaring, "Nobody deserves to die in that manner."

As the indictment looms and the investigation continues to unfold, the community braces for potential revelations and justice for the victims involved in these chilling and unsolved murders.