Cadaver dogs led investigators to the 12-foot deep grave on Wednesday.
Bucks County District Attorney Matthew Weintraub (WINE'-trobe) says Tuesday he is still holding out hope the men will be found alive.
Finocchiaro was last seen around 6:30 p.m. Friday getting into a auto at Hampton Drive in Middletown Township, according to WPVI.
On Wednesday, a man was arrested in connection to the case.
After DiNardo was released from custody on that charge Tuesday night, authorities arrested him again the following day, and accused him of trying to sell Meo's auto to a friend.
Investigators are searching a property that belongs to the DiNardo family.
The detention comes on the heels of Cosmo DiNardo's attorney saying that his client admitted to killing the four men and telling authorities the location of the bodies.
Weintraub would not answer questions on why the DiNardo property is the main search site, and stressed that Cosmo DiNardo does not face any charges related to the men's disappearance. Weintraub declined to discuss how the young man may have died, but assured reporters that his death was, indeed, a homicide. Police would not state to media how many bodies were discovered at the scene and are undertaking a painstaking process to identify any remains. Patrick, who attended a Catholic high school for boys with the man authorities consider a suspect, was last seen last Wednesday (Thursday NZT), while the other three vanished on Friday (Saturday NZT).
July 9: Police find Meo's auto, with his diabetes supplies in it, at 2827 Aquetong Road, about 2 miles from where the plate reader located it two days earlier. At this time, DiNardo has only been named a "person of interest". At least three knew each other.
Weintraub did say the leads they have are "incredibly hot" and that they are making progress with the investigation.