Then on Wednesday, authorities arrested DiNardo on charges he tried to sell Meo's 1996 Nissan Maxima a day after he was last seen.
The possibility of DiNardo facing the death penalty was taken off the table in exchange for the admission, according to the report.
Jimi Taro Patrick, 19, of Newtown Township, is last seen.
Mark Sturgis, 22, Tom Meo, 21, and Jimi Tar Patrick, 19, went missing last week along with Finocchiaro. "Make no doubt about it", said Bucks County District Attorney Matthew Weintraub during a late Wednesday night press conference, according to Thursday, July 13, release. "On June the 9th, we allege that Cosmo DiNardo attempted to sell Meo's vehicle for $500 to a friend whose identity we know but are protecting in court documents for potential safety".
Authorities said all four victims had been positively identified.
Authorities had charged DiNardo earlier this year with having a gun despite an involuntary mental health commitment.
DiNardo's parents, Antonio and Sandra DiNardo, own the farm in upper Bucks County, a bucolic area with rolling hillsides, new housing developments and historic sites.
DiNardo's parents also issued a statement saying they sympathize with the families of the missing men and are doing everything to cooperate with police. According to authorities, he tried to sell the auto. Finocchiaro has been arrested multiple times on charges that include drug possession, driving under the influence and assault.
Despite the discovery of the two cars, Weintraub said Monday that he didn't have any major breaks in the case, and anticipated a possible lengthy investigation. Weintraub declined to discuss how the young man may have died, but assured reporters that his death was, indeed, a homicide. No charges related to the killing of Finocchiaro or the found human remains have yet been filed, Weintraub said.
NBC Philadelphia reported that police are investigating whether a 20-year-old who was arrested Monday on gun charges from February is connected to the incident, though he is not now considered a suspect.