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Accused serial killer Rex Heuermann of Gilgo Beach is linked to two other murders on Long Island

DNA analysis of accused serial killer Rex Heuermann of Gilgo Beach links two other unsolved murder cases on Long Island, Suffolk County prosecutors said Thursday.

Investigators have linked hair found in the remains of victims Jessica Taylor and Sandra Costilla to Heuermann, who is already charged with the murder of four women.

Taylor, a sex worker, died between July 21 and 26, 2003, according to an indictment unsealed Thursday. Costilla was murdered between November 19 and 20, 1993.

Heuermann, 60, has already pleaded not guilty in the case of Megan Waterman, Melissa Barthelemy, Amber Lynn Costello and Maureen Brainard-Barnes, whose remains were found close to each other on a stretch of Ocean Parkway called Gilgo Beach between late fall 2010 and spring 2011.

On July 26, 2003, a person walking his dog in Manorville found Taylor's remains. Her body, which was decapitated and had her arms severed below the elbows, remained unidentified for eight years until her head and arms were found elsewhere, police said. A tattoo on the body was also mutilated, the indictment says.

Suspected Gilgo Beach serial killer Rex A. Heuermann appears in Suffolk District Court in Riverhead on April 17. (James Carbone/Newsday/Pool)

Taylor's head and arms were found in 2011 on Ocean Parkway – east of Gilgo Beach, where the remains of Maureen Brainard-Barnes, Melissa Barthelemy, Megan Waterman and Amber Costello were found, prosecutors said.

In April, a man's hair that police found under Taylor's body in 2003 was genetically linked to Heuermann, prosecutors said.

Costilla's remains were found by two hunters in a wooded area in Southampton. Hair recovered from Costilla's body was also genetically linked to Heuermann, prosecutors said.

The new charges come weeks after Gilgo Beach Task Force investigators searched an area of ​​Manorville where the remains of two victims – Taylor and Valerie Mack – were found more than two decades ago.

Gilgo Beach murder victims, from left: Melissa Barthelemy, Amber Lynn Costello, Megan Waterman and Maureen Brainard-Barnes.
Gilgo Beach murder victims, from left: Melissa Barthelemy, Amber Lynn Costello, Megan Waterman and Maureen Brainard-Barnes.

Just two weeks ago, investigators were back at Heuermann's Massapequa Park home executing a new search warrant related to the case. Officers were observed removing a large rectangular object covered with a blue sheet and loading it into the back of a truck parked in the driveway.

In 2010 and 2011, the bodies of eleven people were found on and near Gilgo Beach. Heuermann has not yet been linked to any of the other seven victims.

The home of Rex Heuermann
The house of Rex Heuermann (Seth Wenig/AP)

Police said it was a Long Island pimp – and DNA from a pizza crust – that pointed investigators to Heuermann. Heuermann was a husband and father who had lived a quiet life in the Nassau County town of Massapequa Park and commuted to Manhattan, where he worked as an architect.

The pimp described the suspect's vehicle to authorities and gave them details of a green Chevrolet Avalanche during a meeting with investigators in spring 2022.

Police also recovered DNA from a pizza crust found in a Manhattan trash can near Heuerman's office and compared it to a hair found on Waterman's body.

Heuermann has been in custody since his arrest last July; a trial date has not yet been set.