Suspect is connected to the murder of women known as the "Gilgo Four," district attorney's office says

July 14, 2023 - New York architect arrested in Long Island serial killings

By Matt Meyer and Meg Wagner, CNN

Updated 6:08 a.m. ET, July 15, 2023
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2:10 p.m. ET, July 14, 2023

Suspect is connected to the murder of women known as the "Gilgo Four," district attorney's office says

From CNN's Carolyn Sung and Kristina Sgueglia

Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello and Megan Waterman
Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello and Megan Waterman Suffolk County Police Department

The suspect in the Gilgo Beach murder investigation, who was arrested Thursday, is connected to the murder of four women who have come to be known as the “Gilgo Four,” according to a spokesperson for the Suffolk County District Attorney’s office.

Authorities initially prompted by the search for missing Shannan Gilbert would come to discover the remains of four other women along a stretch of Ocean Parkway in 2010. All of the women worked as Craigslist escorts, according to officials.

The four women, who were wrapped in burlap and discovered within days of each other, were later identified as Maureen Brainard-Barnes, 25; Amber Lynn Costello, 27; Megan Waterman, 22; and Melissa Barthelemy, 24.

They were last seen between July 2007 and September 2010.

By the time Gilbert’s body was found one year later on neighboring Oak Beach, investigators had unearthed 10 sets of human remains strewn across two Long Island counties.

Authorities later said they believe Gilbert’s death may have been accidental and not related to the Gilgo Beach slayings.