Cosmo DiNardo and Sean Kratz, both 20, each face
Police have confirmed all four men, missing since last week, were found buried on a farm belonging to Mr DiNardo's family.
Both men have confessed to investigators, according to officials.
The accused men - who told investigators they are cousins - allegedly sold the victims cannabis before killing them separately and burning their bodies on Mr DiNardo's family's farm, according to the Bucks County district attorney.
Investigators found the body of Dean Finocchiaro, 19, who disappeared last Friday, in a "common grave" on the 90-acre farm in suburban Philadelphia.
Mark Sturgis, 22, and Tom Meo, 21, also