DNA analyzed in religious community where Xavier Dupont de Ligonnès was allegedly seen turned out to be negative. This test was carried out following several reports, three people thinking they recognized the fugitive at the monastery of Montferrand-le-Château (Doubs) “XDDL’ is still wanted in connection with the murder of his wife and four children, already 13 years ago, in Nantes in Loire-Atlantique.

The bodies of the victims were found under the terrace of the family home. XDDL's sister, Christine Dupont-Dupont, even published a book last March entitled ‘Xavier: my presumed innocent brother’ She details her intimate conviction that he would have been forced to flee France for the United States, being himself a CIA agent. She remains convinced that the family is alive and well abroad, but this thesis goes against the scientific elements associated with the investigation, and does not constitute a serious lead in the case.