In an analysis dated June 9, forensic consultant Armando Palmegiani provided crucial insights about fingerprint 33, which investigators attribute to suspect Andrea Sempio. The analysis suggests that the fingerprint was left under circumstances indicating that it belonged to a person who had just handled a dirty object, possibly relevant to the crime scene where Chiara Poggi's body was discovered. Palmegiani states that the absence of blood on the fingerprint does not eliminate Sempio as a suspect, highlighting the possibility that he could have manipulated the murder weapon while avoiding leaving blood traces on his palm.

The report underscores the importance of the fingerprint in the ongoing investigation into the Garlasco murder case, linking Sempio directly to closed evidence on the crime scene. This revelation occurred three months before Palmegiani would formally join the defense team for Alberto Stasi, another individual implicated in the case. The expert describes the fingerprint examination as a