A flood of evidence has come in since suspect's arrest in Gilgo Beach serial killings cold case, DA says

Rex Heuermann, 59, was arrested and charged with murder in the killings of three of the “Gilgo Four,” a group of women whose remains were unearthed near Long Island’s Gilgo Beach in 2010. He has pleaded not guilty to the killings of Melissa Barthelemy, Megan Waterman and Amber Costello.