The person of interest named in the disappearance of the four Pennsylvania men, Cosmo DiNardo, has confessed to their murders, one of his defense attorneys, Paul Lang, told reporters late Thursday afternoon. 
 
 DiNardo told authorities the location of the four bodies, Lang said, adding that in exchange for the full confession, the District Attorney's Office promised that the death penalty would not be sought. Lang said the motive for the murders will come out in time. 
 
 Lang told ABC News that DiNardo felt "deep remorse" and was "very emotional." 
 
 The remains of Dean Finocchiaro, 19, of Middletown, Pennsylvania were found on Wednesday in a grave 12-feet deep on a sprawling property owned by DiNardo's parents, Bucks County District Attorney Matt Weintraub said at a press conference Wednesday. 
 
 Jimi Tar Patrick, 19, of Newtown Township, has been missing since Wednesday, while Finocchiaro, Mark Sturgis, 22, of Pennsburg, and Tom Meo, 21, of Plumstead, all disappeared Friday. 
 
 Bucks County District Attorneys Office via AP 
 
 DiNardo was initially arrested on Monday on charges relating to illegal possession of a shotgun and ammunition. He was named a person of interest in the disappearances the next day, but he was released from custody after he posted a $1 million bail, 10 percent of which was paid in cash. Then on Wednesday, authorities arrested DiNardo on charges he tried to sell Meo's 1996 Nissan Maxima a day after he was last seen. DiNardo's bail was set at $5 million in cash, the highest that Bucks County Magisterial District Judge Maggie Snow has ever set, she said. 
 
 At a press conference early Thursday morning, shortly after midnight, Weintraub addressed DiNardo, saying, "I feel that we bought ourselves a little bit of time in charging Mr. DiNardo with the stolen car case today and getting that 5 million dollar bail. It is my hope that he does not post that but that is his prerogative of course if he can post it, but we’re going to start looking seriously at the homicide charges and in fact we already have pursued that option." 
 
 The DiNardo family's lawyer, Fortunato Perri Jr., had previously said in a statement that Cosmo DiNardo's parents are cooperating with law enforcement. "As parents, Mr. and Mrs. DiNardo sympathize with the parents and families of the missing young men and they are cooperating in every way possible with the investigation being conducted by law enforcement." 
 
 ABC News' Michael Claiborne and Michael Hayden contributed to this report. 
 
 This story is breaking. Please check back for updates. ||||| Family members of four young men who went missing last week continued their grim vigil at a Bucks County farm Tuesday as prosecutors named 20-year-old Cosmo DiNardo, son of the farm’s owners, a “person of interest.” 
 
 Bucks County District Attorney Matthew Weintraub called the search the biggest investigation in county history, employing hundreds of local, state and federal law enforcement officers who have been combing the 68-acre property in Solebury Township since Sunday night. 
 
 Although he said “foul play” is suspected, Weintraub said no bodies have been found, and encouraged the public to continue sending in tips on the men’s whereabouts. 
 
 “I have hope and it’s very important to hang onto hope until there is no room left for it,” Weintraub said. 
 
 After spending a night in jail, DiNardo, of Bensalem in Lower Bucks, was released late Tuesday after his father posted $100,000 cash — 10 percent of the $1 million bail he’d been held on for what Weintraub called an “unrelated” weapons offense. 
 
 According to court records, Bensalem police learned Feb. 9 that DiNardo had a shotgun and ammunition despite a previous involuntary commitment to a hospital for mental illness, which prohibited him from owning a firearm. 
 
 The charge was dismissed by a district justice in May, though online records do not say why. Prosecutors refiled it Monday, and asked for the high bail due to DiNardo being a “flight risk,” Weintraub said. 
 
 DiNardo’s attorney, Michael Parlow, did not return a phone call. 
 
 Investigators are looking for 22-year-old Mark Sturgis of Pennsburg; 21-year-old Tom Meo of Plumstead Township; 18-year-old Dean Finocchiario of Middletown Township; and 19-year-old Jimi Tar Patrick of Newtown Township. 
 
 Finocchiario, Sturgis and Patrick went missing on Friday. Meo was last seen Wednesday. 
 
 Authorities said Tuesday they were trying to determine any relationship between DiNardo and the missing men. According to their Facebook profiles, DiNardo is friends with Patrick. 
 
 In naming DiNardo a “person of interest,” Weintraub stressed that he had not been charged with any crime connected to the men’s disappearance. 
 
 “I just want to make it crystal clear that he’s not been charged,” Weintraub said. “Sometimes the chasm between someone being a person of interest and being charged with a crime is so wide we never cross it.” 
 
 Joe Holden reports: Cadaver Dogs Used, Dirt Sifted In Search For 4 Missing Men Joe Holden reports: Cadaver Dogs Used, Dirt Sifted In Search For 4 Missing Men SEE MORE VIDEOS 
 
 Weintraub offered few details about DiNardo, who appears to have no criminal record but for a few traffic citations, online records show. His parents, who bought the Solebury property in 2005 and rent it to farmers, own DiNardo Bros. Materials in Bensalem, according to online records. 
 
 Weintraub said his investigators have “been in touch” with DiNardo’s family but declined to discuss their conversations. The DiNardos could not be reached for comment Tuesday. 
 
 On Tuesday, family members of the missing men came and went from the Solebury search site at 6071 Lower York Road, about 30 miles south of Easton. Some were escorted by victim advocates. All declined interviews. 
 
 About 50 Montgomery County police cadets joined the operation Tuesday morning, fanning out over the woods and cornfields that cover the property. Weintraub said crews are using everything from heavy construction equipment to hand tools to sift through evidence on the farm. 
 
 “Take the biggest [crime scene] you’ve ever seen and multiply it by about a million,” Weintraub said. “There is a mind-boggling amount of manpower at just this property alone.” 
 
 Weintraub said police are also looking for the men at other sites. On Monday, they searched DiNardo’s home in Bensalem, just outside Philadelphia. 
 
 Aerial news photos Tuesday showed investigators laying items on tarps near a cornfield. Weintraub declined to say what was found. 
 
 At a Tuesday morning news conference, Weintraub called a media report that investigators had found bodies at the Solebury property “irresponsible.” 
 
 “That’s simply not accurate. We have four families keeping a vigil. When they see something like that it’s very upsetting,” Weintraub said. 
 
 PHOTO GALLERY: The search for 4 missing men in Bucks County has ended with charges of homicide being field against Cosmo DiNardo and his cousin Sean Michael Kratz, both 20. 
 
 Weintraub said he will continue to hold news conferences on the search at least twice a day, and urged anyone with information to call 215-297-8201. 
 
 “We are getting a ton of leads and we are checking out each and every one. Keep them coming,” he said. 
 
 matt.coughlin@mcall.com 
 
 Twitter @coughlinreports 
 
 610-820-6564
– The family of one of four missing young men in Pennsylvania got the news they were dreading Wednesday night when authorities announced that the body of 19-year-old Dean Finocchiaro had been found in a deep grave on a suburban Philadelphia farm. District Attorney Matthew Weintraub said the body was found in a "common grave" more than 12 feet deep, though he didn't say whether the other remains found belong to the three other men who vanished last week, the Washington Post reports. The farm belongs to the family of Cosmo DiNardo, a "person of interest" in the case who was arrested Wednesday for stealing a car belonging to one of the missing men, the New York Times reports. DiNardo, 20, was bailed out by his father late Tuesday after being arrested on a weapons charge from earlier this year. Bail on the new charges has been set at $5 million. "We bought ourselves a little bit of time" with the stolen car charge, Weintraub told reporters early Thursday, adding that homicide charges are being seriously looked at. Eric Beitz, a friend of one of the missing men, tells the Philadelphia Inquirer that DiNardo sold drugs and guns and once boasted about having somebody killed. "Cosmo has spoken about weird things like killing people and having people killed," Beitz says. "Everybody you talk to about this guy, you hear he’s mentally unstable."