Garlasco crime, who is Andrea Sempio, investigated for the murder of Chiara Poggi

Andrea Sempio is now 38 years old. At the time of the murder he was a friend of Marco Poggi, Chiara's younger brother. Immediately after the crime, in 2007, Sempio was interviewed together with other people. Investigated for the first time in 2017, ten years after the murder, he declared that the victim's brother "was very close to me, both him and his family. We still see each other, we go out together regularly. We try to joke about this story: we've gone from 'do you know that girl?' to 'do you know that journalist?'. He was close to me, he gave me strength." In his testimonies, Sempio also said that he had never met Alberto Stasi, despite the fact that they both frequented the Poggi family's villa in via Pascoli. Regarding Chiara Poggi, Sempio had said that "I didn't know her, I met her a few times at home, I remember her as a beautiful, attractive girl". And again: “I had a purely courtesy relationship with her: we met at home, said hello and that was it.” Statements that do not convince the prosecutors who opened the latest investigation.

Sempio - as mentioned - had already been investigated between 2016 and 2017. However, the charges against him were dismissed. The investigating judge of Pavia Fabio Lambertucci, however, had rejected the request of Elisabetta Ligabò, mother of Alberto Stasi, to reopen the case due to some "suspicious" statements and circumstances implemented by the friend of the victim's brother. According to Stasi's lawyers, there would have been a genetic trace on the victim's nails attributable to Sempio. The investigating judge agreed with the public prosecutor in considering the technical advice on the genetic material offered today by the Stasi defense to be "radically unreliable". "If the intention to do everything to defend oneself from a very serious accusation, even after the exhaustion of the possible levels of ordinary judgment, is unacceptable but humanly understandable, in the present case we must nevertheless stop in front of the inconsistency of the efforts made by the Stasi defense", said the investigating judge of Pavia, adding that "the technical advice on the genetic material offered by the Stasi defense is radically lacking in reliability".

Alberto Stasi was definitively convicted of the murder of Chiara Poggi and is finishing his prison sentence under semi-liberty. However, on March 11, 2025, the news was released that Andrea Sempio was once again under investigation for the Garlasco case. The accusation is initially of complicity to murder, and in the following months new searches and investigations are carried out, also making use of new technologies not yet available at the time of the facts. And so we arrived at 29 April 2026, when Andrea Sempio was summoned for questioning the following week in Pavia: in the invitation to appear, the Prosecutor's Office also modified the charge for voluntary homicide, removing the part in which the friend of Chiara Poggi's brother was accused together with other unknown persons or with Alberto Stasi.

According to the reconstruction of the Pavia prosecutor's office and the Carabinieri of the Milan investigative unit, Andrea Sempio killed Chiara Poggi "for abject reasons, attributable to hatred for the victim following the rejection of his sexual approach". Among the aggravating circumstances contested by the investigators also that of cruelty due to "the brutality of the action", the number and extent of the wounds inflicted on the victim, "of which at least 12 lesions on the skull and face". For his part, Andrea Sempio cannot "understand" even "this sexual motive" and repeats "but if I didn't have relationships with this girl, relationships in the social sense, it's not clear where they infer a sexual motive", given that he, then, "didn't frequent her, he didn't see her often, in fact, when he went to the house, Chiara Poggi was at work", said the lawyer Angela Taccia, who assists the 38-year-old with the lawyer Liborio Cataliotti.

On May 6, Sempio appeared at the prosecutor's office in Pavia, at the request of the prosecutors. The day before his lawyers had made it known that their client would exercise the right not to respond. The 38-year-old remained in the prosecutor's office for about 4 hours and did not make any statements when he came out. On that occasion, new environmental interceptions emerged in which it seems to speak of a refusal on the part of Chiara Poggi to an invitation to meet. Also on May 6, Marco Poggi was heard as a witness. While the day before it had been the turn of the Cappa twins, Chiara Poggi's cousins, heard in Milan. On 7 May the Prosecutor's Office closed the investigation against Sempio, deeming him responsible for the murder of Chiara Poggi, and announced the transmission to the Milan Prosecutor's Office, as announced, of the documents from the investigations carried out to solicit a request for a review of the trial which ended in 2015 with a 16-year sentence for Alberto Stasi. On November 3, the Pavia Prosecutor's Office requested Sempio's trial. The request for indictment must be evaluated by a preliminary hearing judge after the preliminary hearing has been set.