Rex A. Heuermann, the Gilgo Beach serial killer, pleads guilty...

Rex A. Heuermann, the Gilgo Beach serial killer, pleads guilty in court on Wednesday to the murders of seven women during a 17-year killing spree. He also admitted to an eighth killing. Credit: Newsday/James Carbone

Rex Heuermann also admitted to dumping victims' bodies near Gilgo Beach, establishing jurisdiction in Suffolk County.

He said he strangled Amber Lynn Costello, offering a matter-of-fact account. 

He also admitted it was his intent to kill the victims during a two-year period, in order to satisfy the first-degree murder charges.

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