New developments in the brutal murders of 4 young Pennsylvania men

Cosmo DiNardo has been charged with murder in all four deaths, while his cousin Sean Kratz has been charged in three of the alleged murders.
1:31 | 07/15/17

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Transcript for New developments in the brutal murders of 4 young Pennsylvania men
the brutal murders of four young men outside of Philadelphia. Cosmo Dinardo charged in the death of all four victims. His cousin, Sean Kratz also charged in three of the alleged murders. ABC's Eva pilgrim is in Pennsylvania. Reporter: Tonight, we're learning more about one of the two men behind bars, charged in the gruesome murders of four pennsylvanian men. Authorities say cosmo confessed to the slaying, saying his cousin Sean Kratz helped. Dean Finocchiaro, Thomas Meo, mark Sturgis and gymi Patrick were missing for over a week. We're here to seek justice for them. And that's our commitment. Reporter: Authorities say cosmo admitted to murdering Patrick on July 5th and told investigators he and Kratz killed the three, saying he lured the men to the farm with the idea of buying marijuana. The case disturbing neighbors in this Philadelphia neighborhood where Kratz used to hang out. People used to view him troubling and a menace. Reporter: They watched as Kratz's crimes escalated over time. You should have some relief that this kid will no longer be around. But I don't think it was fair at the expense of these four young men who lost their lives. Reporter: Prosecutors say they don't know a motive and maybe never know one. The court entering a not guilty plea for both men. They're due back in court on both charges at the end of the month. Eva, thank you. Now to the danger on America's highways. Take a look at this, a driver in

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