Xavier Dupont de Ligonnès: checks and DNA tests carried out after a report in Doubs. A woman thinks she saw him within the community of Sisters of Bethany, in Montferrand-le-Château.
He has been missing since 2011 and the death of his wife and four children at their family home in Nantes. The characteristics of this religious order pushed the gendarmes of the Besançon research brigade to dig and investigate.