"We believe there is information out there that could aid the police department in solving this case," said Crime Stoppers Board President Nick Amarr. "We are hoping this will give someone incentive to come forward."
Anyone with information is encouraged to call 1-800-220-TIPS.
The grisly remains of 10 people have been found in recent months in the woods and dunes near Gilgo Beach.
Five have been identified as belonging to prostitutes, one was a baby girl and another an Asian man. Three others remain unidentified.
While cops have said that at least some of the dead were the victims of a serial killer, they have raised the possibility that more than one killer is at work.
Investigators made the first chilling discovery of four bodies wrapped in burlap in December 2010.