Sempio's DNA under Chiara's fingernails: “The PC has nothing to do with it.” Hunt for 'Unknown 2' | The mystery of the 4 lost 'long black' hair

According to the prosecutor's office, the young suspect came into close contact with the victim on 13 August 2007: a hypothesis excluded in 2017

Around the victim's nails, there is no DNA from the family members. The defense, with the superconsultant Luciano Garofano, rejects the thesis: “Irrelevant quantities of genetic material”