The Ris in Garlasco to reconstruct the crime scene in 3D by triangulating the traces

The 'triangulation' method is reportedly used to delineate the specific 'positioning' of tracks, i.e. to measure the distance in centimetres between one track and another, and then create a 3D map of the crime scene.

And this is the work that was carried out today by the carabinieri, who 'mapped' with a laser scanner the entire ground floor and also the area of the staircase leading to the cellar, where on the right wall, for example, the now well-known fingerprint 33 attributed to Andrea Sempio was found, according to a recent dactyloscopic consultation ordered by the Pavia prosecutors.

The carabinieri of the Ris (Scientific Investigations Department is a military department of the Carabinieri Corps) in Cagliari, who work closely with their colleagues from the Nucleo Investigativo in Milan, have asked the Pavia public prosecutor's office, which appointed them, for 60 days to be able to provide answers to all three questions;

In the house, in addition to Chiara's parents living there, Giuseppe Poggi and Rita Preda, also present were Angela Taccia, lawyer together with Massimo Lovati of Andrea Sempio, the 37-year-old man under investigation again, and the Poggi family's consultant, Davide Radaelli.

In the new investigation, the Pavia Public Prosecutor's Office has ordered a premises inspection order in the house. To carry out 'measurements at the property with the use of appropriate technical instruments' and 'photographic surveys', the act states. The order issued by prosecutors Napoleone-Civardi-De Stefano-Rizza was notified to Sempio's lawyers 24 hours in advance on Sunday.

Asked,' La Presse reports, 'if another way of killing was hypothesised, the lawyer Taccia said, 'no, you cannot say. We have to wait for the investigation.

The Poggi family had been informed of the inspection 'through the grapevine' a few days ago, say lawyers Gian Luigi Tizzoni and Francesco Compagna, who do not hide a certain annoyance at the way it was carried out. "The Pavia Public Prosecutor's Office had formally committed itself to guaranteeing the confidentiality of the investigative verification," they state. "Once again this morning, as always in the past, Chiara's parents opened the doors of their home to the investigators, as had been requested in the past,' add Tizzoni and Compagna. 'Once again they were bitterly surprised to find that the relevant inspection decree had been made immediately available to the press and not to them, as the offended persons.

The new 3D reconstruction of the dwelling, as well as a new hypothetical Bpa analysis, the discipline that studies bloodstains to reconstruct the manner and dynamics of a murder, will have to fit in, overlap with, or modify those already present in the sentences on the Garlasco murder.

In particular the expert report entrusted in 2014 to Milan Court of Appeal consultants Gabriele Bitelli, Roberto Testi and Luca Vittuari: 158 pages of analysis on shoe prints and bloodstains at the crime scene. They became crucial in Alberto Stasi's 16-year prison sentence for having established that the "chances of not stepping on" blood entering or leaving "the hallway" of the stairs where Chiara Poggi's body was found were "0.00038%" for those who had stopped at the first step and "0.00002%" for those who had stopped at the second, as the victim's ex-boyfriend recounted.

According to the trials, Chiara Poggi was killed in 'two stages'. First she was shot at the entrance by a person with whom she was so familiar that she opened the door in her pyjamas, in the 'living room' and 'at the foot of the staircase leading to the upper floor, next to the railing' where the 'first conspicuous pool of blood' was found;

then she was dragged and finally shot again at the corridor door, leaving blood spatter on the door, telephone, doorframe, wall and floor.

From step number zero of the staircase leading to the basement, the body was 'thrown' downwards by someone who knew of the existence of the staircase to the basement. It slammed onto the fourth step and slipped slowly, leaving 'stains' from 'slipping' on the next steps (7th-8th). The 26-year-old's body was found with her head lying on the 9th step.