Walther PPK
Nevertheless, criminologists Pasquale Ragone and Nicola Guarneri, in their book "Le ombre del silenzio" ("The shadows of silence", 2013) pointed out the several incongruences between the shell case of the bullet found in Tenco's room and the bullet Tenco's Walther PPK gun would eject. Professor of ballistic forensics Martino Farneti proved that they did not match. As there was no proof nor official statement declaring that Tenco's Walther PPK was actually present in his room the night he died (the police registers show that the gun was actually found in his car), Guarneri and Ragone assume that Tenco might have been killed. The actual weapon might have been a Beretta 70, as it is possible to put a silencer on this type of gun (similar to a Walther PPK). In fact, the night Tenco died (allegedly in his hotel room), no one heard the sound of the gunshot, not even singer Lucio Dalla, whose room was next to Tenco's, nor did journalist Sandro Ciotti, whose room was in front of Tenco's.