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 Cosmo DiNardo, the 20-year-old man who allegedly admitted to killing four missing men in Pennsylvania, was officially charged on Friday. But he wasn't the only one. 
 
 DiNardo faces four counts of criminal homicide, conspiracy to commit criminal homicide, and abuse of corpse, as well as 12 other charges. 
 
 On Friday, Sean Michael Kratz, 20, was also charged with criminal homicide, according to court documents. Officials had brought him in for questioning the day before. 
 
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 Kratz faces three counts of criminal homicide, three counts of conspiracy to commit criminal homicide, three counts of abuse of corpse and 11 other charges. 
 
 According to NBC Philadelphia, Kratz was arrested by Philadelphia police late on Thursday at his home in the city. 
 
 Related: Cosmo DiNardo Confesses to Killing Four Missing Men in Pennsylvania 
 
 The murders occurred over a few days in early July. All four men — identified as Jimi Taro Patrick, 19, Dean Finocchiaro, 19; Thomas Meo, 21; and Mark Sturgis, 22 — met with DiNardo and Kratz to purchase large quantities of marijuana, according to the Bucks County District Attorney's office, though it remains unclear if drugs were the motive behind the killings. 
 
 "I don't know [why DiNardo and Kratz killed them]," Bucks County District Attorney Matthew Weintraub told reporters on Friday. "We may never know." 
 
 At DiNardo and Kratz's arraignment later in the day, both men entered a plea of not guilty. 
 
 Bucks County District Court Judge Maggie Snow scheduled the men's preliminary hearings on July 31 and set no bail. She also ordered that they not be placed in the same prison out of concern for their safety. 
 
 DiNardo admitted to the four murders on Thursday and told authorities where to find the bodies, according to his attorney Paul Lang. 
 
 The body of one of the men was found at the bottom of a 12½-foot-deep grave on a farm in Bucks County owned by DiNardo's parents. The three other victims were found in a metal tank that was buried on the farm, according to the affidavit. 
 
 DiNardo told police that he agreed to sell Patrick four pounds of marijuana for $8,000 and brought him to the farm on July 5, according to the probable cause affidavit. Patrick only had $800, so DiNardo offered to sell him a shotgun instead. He then took Patrick to a remote part of the property, shot him with a .22 and buried him with a backhoe, according to the affidavit. 
 
 A law enforcement official escorts Cosmo DiNardo to a vehicle on July 13, 2017 in Doylestown, Pennsylvania. Matt Rourke / AP 
 
 Two days later, DiNardo offered to sell a quarter-pound of marijuana to Finocchiaro for approximately $700, the affidavit said. On the way, DiNardo picked up Kratz and allegedly gave him a .357 handgun. They allegedly agreed to rob Finocchiaro. 
 
 While at the farm, Kratz shot Finocchiaro in the head, according to DiNardo's statement to police. DiNardo then took the gun and allegedly shot Finocchiaro while he was on the ground. They used a backhoe to place the body in a metal tank that DiNardo referred to as a "pig roaster," the affidavit said. 
 
 On the same day, the affidavit said, DiNardo met with Meo and Sturgis not far from the farm and brought them back to the property under the guise of a marijuana deal. Kratz waited for them, as he and DiNardo agreed to rob the pair. 
 
 When they returned to the farm, DiNardo allegedly shot Meo in the back and shot Sturgis as he tried to run away with the .357 handgun. 
 
 He then allegedly ran over Meo, who was still alive, with the backhoe before lifting both men's bodies in a metal tank. He poured gasoline inside and lit them on fire. 
 
 He buried the tank the next day with Kratz's help. 
 
 Kratz's statement to police on Thursday was similar to DiNardo's, though he claimed he did not shoot anyone. 
 
 DiNardo was originally arrested on Monday for an unrelated gun charge. He is not allowed to own a gun because of his history of mental illness. 
 
 The Philadelphia Inquirer reported that his lawyers claim he is schizophrenic. 

 EMBED More News Videos VIDEO: Cosmo DiNardo in police custody. See raw video from the Action Cam from July 13, 2017. 
 
 EMBED More News Videos Watch the full news conference by Bucks Co. D.A. Matt Weintraub announcing murder charges against Cosmo DiNardo and Sean Kratz on July 14, 2017. 
 
 EMBED More News Videos Community reacts to Bucks Co. missing men murders. Gray Hall reports during Action News at 10pm on July 13, 2017. 
 
 EMBED More News Videos Watch video from Chopper 6 HD over the scene in Solebury Township where investigators discovered human remains. 
 
 EMBED More News Videos NE Philly man in custody, Ambler home search in Bucks Co. killings case. Vernon Odom reports during Action News at Noon on July 14, 2017. 
 
 EMBED More News Videos VIDEO: Cosmo DiNardo arrives at Bucks County prison. See raw video from Chopper 6 on July 12, 2017. 
 
 Two cousins have been charged in the killings of four men in Bucks County, and on Friday afternoon the district attorney's office released its alleged sequence of events in the homicides.One of those men is 20-year-old Cosmo DiNardo. His lawyer previously said his client has confessed his involvement to police.The other man is 20-year-old Sean Kratz of Northeast Philadelphia. He was taken into custody around 2:30 a.m. Friday.DiNardo is charged with a number of offenses including four counts each of criminal homicide, conspiracy to commit criminal homicide and abuse of a corpse. He also faces three counts of robbery."I'm sorry," a shackled DiNardo said to reporters as he was led away by police on Thursday.Kratz is also facing a list of charges including three counts each of criminal homicide, conspiracy to commit criminal homicide, abuse of a corpse, and robbery.DiNardo is accused of killing Jimi Taro Patrick, 19, of Newtown Township, on July 5, and burying him in a single grave on his parents' land.DiNardo and Kratz are both charged with the July 7 slayings of Dean Finocchiaro, 19, of Middletown Township; Thomas Meo, 21, of Plumstead Township; and Mark Sturgis, 22, of Pennsburg, Montgomery County. Their bodies were found Wednesday in a 12-foot-deep common grave elsewhere on the same property.All four men had been shot, according to a probable cause affidavit, which said the suspects both gave statements to police on Thursday.Each victim has been positively identified, Weintraub said, and their family members were briefed on details of the case on Friday morning.The only motive disclosed by investigators was that DiNardo said he wanted to set the victims up when they came to the farm to buy marijuana.According to the probable cause affidavit, DiNardo told investigators that he had agreed to sell Patrick four pounds of marijuana for $8,000.Dinardo said he picked up Patrick at Patrick's home in Newtown on July 5 and drove him to the DiNardo property in the 6000 block of Lower York Road in Solebury, the affidavit says.When they arrived, DiNardo said, Patrick had only $800, so DiNardo offered to sell him a shotgun for that amount, the affidavit says. They walked to a remote part of the property, where DiNardo said he fatally shot Patrick with a .22 caliber rifle, according to the affidavit.DiNardo then drove a backhoe that was on the property to where Patrick lay, dug a hole no more than six feet deep and buried him, the affidavit states. Based on DiNardo's statement, investigators located Patrick's body in that grave late Thursday.On July 7, DiNardo told investigators, he agreed to sell a quarter-pound of marijuana to Finocchiaro for about $700, the affidavit states.DiNardo first picked up Kratz, whom he described as his cousin, and drove to Finocchiaro's home in Middletown. DiNardo and Kratz allegedly agreed on the way that they would rob him, the affidavit says.DiNardo said he gave Kratz a .357 handgun belonging to his mother, and then drove all three to the Solebury property.According to the affidavit, he said Kratz shot Finocchiaro in the head as they were leaving a barn on the site.(NOTE: Kratz gave a similar statement to detectives on Thursday night, the affidavit says, but said that it was DiNardo who shot Finocchiaro, not him.)DiNardo told investigators he then took the gun and shot Finocchiaro a second time as the victim lay on the ground.Also on July 7, DiNardo said he met Meo and Sturgis at a church parking lot in Peddlers Village, a short distance west of the DiNardo property on Route 202 in Lahaska, the court records say.DiNardo told investigators that he had a marijuana "deal" set up with Meo, according to the affidavit.Meo and Sturgis followed DiNardo to the Solebury property in Meo's Nissan Maxima, Dinardo allegedly told investigators.After parking the Nissan in the 2000 block of Aquetong Road, Meo and Sturgis rode with DiNardo in his truck to the adjacent Lower York Road property, where Kratz awaited, the affidavit states.After the men exited the truck, DiNardo said, he shot Meo in the back with the .357 handgun, then fired several times at Sturgis as he fled, and Sturgis fell to the ground, the affidavit states.DiNardo said he then ran over Meo with the backhoe before using it to lift both bodies into a metal tank where he already had placed Finocchiaro's corpse, the court records say.The following day, DiNardo told police, he and Kratz returned to the property, where DiNardo used the backhoe to dig a deep hole and bury the tank containing the three bodies, the affidavit says.He allegedly poured gasoline into the metal tank and lit it on fire in an effort to hide their identities, but the DA said that effort was "not successful.""I don't know what convinced him (to confess). I'd like to think he wanted to get these boys home," Weintraub said at a news conference, explaining the surprise plea agreement forged Thursday that led them to the final body.Authorities might never have found the fourth body unless they worked with DiNardo, Weintraub said."We'd still be looking for Jimi Patrick had we not made this agreement," Weintraub said. "It was so far away (from the others on the farm) that I started to get sick to my stomach on the ride."DiNardo and Kratz were arraigned on Friday afternoon. The judge denied bail for both men.They will be jailed separately after prosecutors argued the men were dangers to society.The Action Cam was at Kratz's home in the 800 block of Magee Ave. in Northeast Philadelphia's Lawndale neighborhood on Friday after he was taken into custody.Also Friday, police were searching a home and property in the 400 block of Susquehanna Road in Ambler, Montgomery County. The property is believed to be the home of a relative.Authorities had charged DiNardo earlier this year with having a gun despite an involuntary mental health commitment. He was arrested on that charge Monday and held on 10% of $1 million bail. He then posted bail on Tuesday.On Wednesday, he was charged with stealing Meo's car and held on $5 million cash bail. In seeking that bail, prosecutors said he had been diagnosed with schizophrenia. He also suffered a head injury in an ATV accident about a year ago.DiNardo's parents declined to comment after leaving a government building where he spent several hours with Bucks County District Attorney Matthew Weintraub and other investigators on Thursday.Kratz told a judge Friday that he had no lawyer. She replied that he should hire one or apply for a public defender.----------
– Cosmo DiNardo and his cousin, Sean Kratz, were charged Friday with multiple counts of homicide, abuse of a corpse, and conspiracy in connection with the deaths of the men who disappeared earlier this month in Pennsylvania, the Philadelphia Inquirer reports. According to NBC News, the district attorney says "we may never know" why DiNardo and Kratz—both 20—allegedly killed the four men, though all four deaths appear tied to drug deals. DiNardo, who confessed to the murders Thursday in exchange for avoiding the death penalty, says he was going to sell Jimi Patrick, 19, four pounds of marijuana for $8,000 on July 5. He says Patrick only had $800 so he offered to sell him a shotgun instead; then he shot him. DiNardo says he and Kratz agreed to rob Dean Finocchiaro, 19, during a similar drug deal July 7. He says Kratz shot Finocchiaro during the robbery. (WPVI reports the major difference between statements by DiNardo and Kratz is that Kratz claims DiNardo shot Finocchiaro and he never shot anyone.) DiNardo told police he shot the other two victims—Thomas Meo, 21, and Mark Sturgis, 22—during a second drug-deal-turned-robbery July 7. With help from DiNardo, police found the four bodies on property belonging to DiNardo's family. Authorities say DiNardo had attempted to burn three of the bodies in a metal container he called "the pig roaster." Prosecutors say DiNardo has been diagnosed as schizophrenic. Kratz has been implicated in multiple burglaries in the past.