Thierry Meunier, 63, is currently on trial for the murder of his wife in Saint-Quay-Portrieux in 2010. Meunier has always denied committing the crime, claiming his wife died due to natural causes. The trial, which is taking place before the court of assizes in Saint-Brieuc, Côtes-d'Armor, has been examining various pieces of evidence to determine whether Meunier is responsible for her death. On Wednesday, September 23, 2026, a key piece of evidence was presented: the geolocation data from Meunier’s mobile phone. This data was analyzed by a gendarme who specializes in telecommunications. The geolocation information is used to track the movement of a phone based on signals from nearby cell towers, and it can help establish a person’s location at a specific time. The prosecution argued that the geolocation data placed Meunier near the scene of the crime on the night of the murder, which contradicted his claim that he was at home. However, Meunier’s defense lawyers were unconvinced by the evidence. They questioned the accuracy of the geolocation data and suggested that it could have been misleading or incomplete. They also pointed out that the technology used in 2010 was less advanced than it is today, which could affect the reliability of the data. As the trial continues, the court is considering all available evidence, including witness testimonies and forensic findings. The case has drawn attention due to the long time that has passed since the crime, and the fact that Meunier has maintained his innocence throughout the legal process. The outcome of the trial will depend on whether the court finds the presented evidence convincing enough to determine Meunier’s guilt.