Undisclosed Male DNA Found on Alberto Stasi Bicycle Pedals in Garlasco Investigation
Investigators probing the murder of Chiara Poggi have uncovered a laboratory record detailing a sample of male DNA collected from the pedals of Alberto Stasi’s bicycle that was not shared with prosecutors or defense attorneys, as reported. The finding forms the cornerstone of a new investigative file opened by the Pavia Public Prosecutor’s Office, adding fresh scrutiny to the forensic handling of the high-profile case.
Missing Worksheet From September 2007 Forensic Analyses
The undisclosed discovery emerged from working notes compiled by then-Lieutenant Colonel Alberto Marino, who served as a consultant for the Vigevano prosecutor’s office during the initial investigation. According to geneticists Pierangela Grignani and Carlo Previderé, who filed a formal technical consultancy report on September 15, forensic analysts at the Carabinieri’s Scientific Investigations Department (Ris) of Parma examined the bicycle pedals on September 19, 2007, initially extracting a genetic profile attributed to Chiara Poggi. Subsequent tests conducted over the following days yielded conflicting results, including a blank profile and negative indicators for blood detection.
Among the newly recovered paperwork is a specific worksheet dated September 26, 2007, which outlines a DNA quantification schema for samples labeled with the prefix bu_p
. One particular entry, identified as bu_p bus
, registered 18.9 picograms per milliliter of human DNA alongside 8.44 picograms per milliliter of male DNA.
Internal Friction and Departmental Scrutiny at the Ris
The revelation has triggered internal friction within the Parma Ris, where Lieutenant Colonel Alberto Marino now leads the Biology section responsible for genetic investigations for dozens of prosecutor’s offices. During questioning by Pavia magistrates, Marino repeatedly invoked memory lapses regarding the events of September 19 and 20, 2007, failing to satisfy investigators regarding why the data was withheld from the case file.
Defense attorneys Giada Bocellari and Antonio De Rensis have incorporated these omissions into a formal dossier submitted to the Pavia prosecutors this past summer.
Internal Emails Show Garofano Urged Subordinates to Ridicule Opposing Arguments
The evaluation characterized Stasi as a cold calculator marked by an absolute lack of emotion, though this document was likewise omitted from the formal trial records utilized to secure his conviction.

Frequently Asked Questions About the New Garlasco File
Who is currently under investigation in the new Pavia inquiry?
The newly opened investigative file centers on Andrea Sempio, who is accused of aggravated murder. Prosecutors have also opened a separate, parallel strand to examine potential criminal liability for the military personnel who executed and allegedly concealed the 2007 forensic analyses, though no specific suspects have been named in that subsidiary file yet.
What specific testing anomalies occurred on the bicycle pedals?
Initial testing on September 19, 2007, identified Chiara Poggi’s DNA on the pedals, but subsequent tests on September 20 yielded an empty profile. A worksheet from September 26 subsequently recorded 8.44 picograms of male DNA alongside 18.9 picograms of human DNA, a result that never made it into the official Ris technical disclosures.
What are the next steps for Alberto Stasi’s legal defense team?
Attorneys Giada Bocellari and Antonio De Rensis are utilizing the newly recovered Ris archives, missing worksheets, and delayed evidence disclosures to build foundational arguments for an upcoming petition for trial revision before the judicial authorities.
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