The Pennsylvania man who confessed to murdering four young men earlier this month claims to have killed two other people. Cosmo DiNardo, 20, is already facing four counts of first-degree murder following his confession last week that he lured four men to their deaths at his family’s 90-acre farm in Solebury Township. He now claims to have also killed a man and a woman in two separate incidents in Philadelphia over the past five years, though he said he doesn’t know the names of his victims, authorities said Tuesday. Police Commissioner Richard Ross said investigators are looking into DiNardo’s claims but the information provided is “sketchy.” Detectives have not yet questioned him over the two other possible murders. “We have to talk to him directly in order to have a starting point. Dealing with it third hand is virtually impossible,” Ross said.