Xavier Dupont de Ligonnès is wanted for a quintuple homicide in 2011. Gendarmes had collected cans drunk by a visitor who had gone to the community of Dominican sisters of Béthanie, in Montferrand-le-Château, near Besançon.

Several people had found a resemblance to the man suspected of killing his wife and four children in April 2011. The investigation has not determined whether he was dead or on the run, and he has never been found. The two DNA profiles do not match, says the public prosecutor of Nantes Renaud Gaudeul. The investigating magistrate and the investigation services referred are continuing their investigations and the tedious but careful verifications of all the reports received, added the prosecutor. The case is still under investigation by the Nantes prosecutor's office and the prosecutor's court in Nantes and in the town of Bordeaux, in the Ardennes, in northern France, and in France in general.