Rex A. Heuermann, 59, pleaded not guilty to three counts each of first- and second-degree murder relating to the deaths of Melissa Barthelemy, Megan Waterman and Amber Costello during his arraignment in Suffolk County Court in Riverhead Friday.
Rex Heuermann is charged with first and second degree murder in connection with the deaths of three victims – Melissa Barthelemy, Megan Waterman and Amber Costello. He’s said to also be a prime suspect in a fourth.
A break in the Gilgo Beach investigation came on March 14, 2022, when a New York State investigator linked the Avalanche to the Massapequa Park resident.