Overview
- Investigators from the Procura di Pavia have collected files, technical reports and witness statements to rebuild the exact sequence of tests run by the Carabinieri RIS in 2007.
- The inquiry focuses on a three‑hour change on 19 September 2007 when a pedal trace went from a partial result to a full match with Chiara Poggi’s DNA, a shift now described by prosecutors as unexplained.
- Forensic examiners flagged an identical DNA quantity—2.78 nanograms—on a household teaspoon and the pedal sample, which led investigators to consider a possible vial or probe exchange in the RIS lab.
- Witness testimony says re‑amplification was performed by then‑officer Alberto Marino but the final profile file was uploaded by an operator logged as 'Port', and some negative control traces were never provided to the parties.
- Defence lawyers have asked the Procura di Pavia to order further checks on other items such as a soap dispenser, and prosecutors say technical reconstructions and additional analyses remain ongoing before any legal conclusions are reached.