Investigators also say they found a “manifesto,” called the HK Planning document, on how to kill and avoid detection on a hard drive in the basement of Heuermann's home during the two-week search of the house after his arrest. But prosecutors didn't discover the document until March during a search using a computer forensic extraction method called file carving.
The discovery of the Microsoft Word document, created in 2000, was described by Tierney as another breakthrough in the case, which prompted a second search in April and May of Heuermann’s home and the woods in Manorville where remains of three of the victims were found.
“This is a manifesto that methodically outlines how to carry out the selection and murders,” Assistant District Attorney Nicholas Santomartino said at Heuermann's arraignment on the new charges last month.
The alleged “manifesto,” discovered when a laptop seized under a July 2023 search warrant for Heuermann's house was analyzed March 7, gave those same investigators the “blueprint” to understand just how Heuermann operated, the prosecutor added.
“We allege that this document [shows] the defendant’s intent of committing the charged crimes,” Tierney said. “His intent was specifically to locate these victims, to hunt them down, to bring them under his control and to kill them.”
Brown has declined to comment on the new charges or the alleged "manifesto."
The families of the victims also declined to comment through their attorney. Heuerman, who until his arrest had no criminal record, will be in court again on July 30
Gilgo Beach murder suspect Rex Heuermann is charged with killing six women. That list could grow as police examine unsolved murders.
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