Authorities say they found a "planning document" for murders in Rex Heuermann's home. He's accused of killing at least six women.

New evidence in the case of Rex Heuermann includes a document with details on how the suspect planned the slayings, investigators say.

The disturbing file, which prosecutors call a "planning document," had notes on supplies, destroying evidence and getting enough sleep before a "hunt."

Gilgo Beach serial killings suspect Rex Heuermann now faces charges in the deaths of six women spanning three decades and multiple Long Island communities after he was indicted on two new murder charges Thursday — the latest development in an investigation authorities in New York say is far from over.