Who is Giorgio Portera, the former RIS investigator in the Garlasco case?

Giorgio Portera is the geneticist and former member of the Parma RIS who made headlines for the Garlasco crime . His name returned to the news on September 29, 2026 , when he was questioned by the Pavia Prosecutor's Office as part of the investigation into the case's evidence.

Portera is a retired Carabinieri officer . He worked in Parma's Scientific Investigations Unit , conducting genetic analyses on high-profile cases. His position is now at the center of a heated legal dispute, because his statements concern the DNA found on Alberto Stasi's bicycle.

What Portera said

Before the magistrates, the former RIS investigator explained that he did not personally analyze the genetic sample found on the bike. He added that he did not sign any reports or reports related to that analysis. His system username appears in his reconstruction, but the sample had already been processed by others before his intervention.

The Garlasco case

The Garlasco crime dates back to August 13, 2007. Chiara Poggi was killed in a villa in Garlasco, in the province of Pavia , after being found dead by her boyfriend Alberto Stasi . The case went through years of trials, expert reports, and reopenings, until Stasi was finally convicted.

Why are we talking about it today?

The new investigations concern the scientific evidence and its chain of custody. According to what has emerged, the DNA on the pedals of Stasi's bicycle does not belong to Chiara Poggi . The technical issue is delicate: there is debate about who performed the analyses , which samples were manipulated, and how much that material still weighs on the proceedings.

FAQ

Who is Giorgio Portera?

He is a forensic geneticist and former member of the Parma RIS , a retired officer of the Carabinieri.

Why was he questioned by the Pavia Prosecutor's Office?

To clarify his role in the DNA analyses linked to the Garlasco crime, in particular on the sample found on Alberto Stasi 's bike.

What did he declare?

That he did not analyze the sample and that he did not sign any reports or documents : the material, according to his version, had already been processed by others.