Gilgo Beach serial killer Rex Heuerman will be charged with a seventh murder in the November 2000 slaying of Valerie Mack, police sources told The Post on Tuesday.
The parents of Mack, whose bodies were found in Gilgo Beach and Manorville, are scheduled to appear in court Tuesday morning after Heuerman was arraigned on new charges.
Prosecutors named Mr. Heuerman, 60, as the suspect in Mack's death in June, based on evidence including detailed notes about the serial killings seized from his Massapequa Park home.
Heuerman has already pleaded not guilty to charges stemming from the murders of six women whose bodies were found in Gilgo Beach and other parts of eastern Long Island.
