Dupont de Ligonnès murders and disappearance

The Dupont de Ligonnès murders and disappearance also known as the "Nantes massacre" involved the murder of five members of the same family in Nantes, Loire-Atlantique, France, followed by the disappearance of the patriarch of the family, Xavier Dupont de Ligonnès. His wife, Agnès Dupont de Ligonnès, and their four children, Arthur, Thomas, Anne and Benoît, along with the family's two dogs, were killed on an undetermined day in early April 2011. Their bodies were found buried in their garden on April 21. Xavier disappeared at the same time and has not been found. The exact nature of the events has never been determined, but Xavier is considered the prime suspect in the murders. Since the investigation began, he is targeted by an unpublished blue notice (witness) of Interpol.