A police officer and dog stumbled on a body believed to be Gilbert's on Saturday, during a routine training exercise.
Two days later, the other three bodies were discovered - including one thought to be that of a missing Maine mom.
Two of the bodies were stuffed into burlap sacks.
Police officials reluctantly acknowledged that they might have a Jack the Ripper on their hands.
"I don't think it's a coincidence that four bodies wound up in this area," Dormer told reporters.
Police said the bodies were dumped separately over a period of up to two years and were severely decomposed.