The remains were uncovered in a common grave buried 12-and-a-half feet underground on the 90-acre Solebury Township farm, Weintraub said.
Bucks County District Attorney Matthew Weintraub said 20-year-old Cosmo DiNardo was re-arrested on an unrelated gun charge Monday because he has become more of a flight risk.
A 20-year-old man has confessed to killing four men who went missing a week ago, after a body was found on his parents' Pennsylvania farm.
Finocchiaro was last seen on July 7.
On Wednesday, a man was arrested in connection to the case. He was then taken back into custody on Wednesday for allegedly trying to sell the vehicle of one of the missing men for $500.
Sources say the spotlight is being shifted to DiNardo's parents as investigators want to question them under oath about their son's actions last weekend after four young Bucks County men disappeared. ABC News reported Sturgis and Meo were longtime friends, and Sturgis' father toldthe Associated Press that the pair know Finocchiaro.
"I don't know how this is going to end up, unfortunately, but I am confident that we are going to get to the bottom of this", Weintraub said. Patrick disappeared on July 5, and the three others went missing two days later.
Newtown Township, Plumstead Township, Middletown Township Police and state police are all involved in the joint investigation, Bucks County Assistant District Attorney Gregg Shore told ABC affiliate WPVI-TV. Weintraub would not say exactly what led authorities there, but on Monday called leads in the case "incredibly hot" and "very fruitful". He is charged with stealing the 1996 Nissan Maxima and trying to sell it for $500 to a friend in Bensalem (where Dinardo lives).
DiNardo was originally arrested earlier this week over illegally possessing a shotgun and ammunition on a charge filed back in February, but was bailed.
He is being held in the Bucks County jail on $5 million cash bail. They're working to identify other remains found in the same grave.
Prosecutors have not confirmed Lang's announcement, but the AP reported that DiNardo killed the four separately after selling them marijuana, and then burned their bodies at his family's farm.