Overview
- The inquiry focuses on a three-hour window on 19 September 2007 when results on the bicycle-pedal sample shifted from a partial profile to a full match with Chiara Poggi.
- Documents show the teaspoon taken from the victim’s home and the pedal sample recorded the identical DNA quantity of 2.78 nanograms, prompting investigators to hypothesize a sample or tube swap in the RIS lab.
- Files also record two 'corse nulle' or null control runs performed the day after the initial tests that were not shared with the then–prosecutor or Stasi’s defence, raising disclosure and chain-of-custody concerns.
- Testimony collected in September 2026 says external consultants and defence experts sometimes entered RIS laboratory spaces and reviewed results with lab staff, and the lab operator who uploaded the matching profile was identified by an internal code as 'Port' or Portera.
- Prosecutors are ordering further technical checks on the teaspoon and other traces and the probe could lead to new forensic testing, questions about past prosecutorial decisions, and possible accountability for lab practices.