Lucie, 16, has not returned home since February 4 in Vavaincourt. The Bar-le-Duc public prosecutor's office (Meuse) announced this Friday that it would open a judicial investigation.

A group of investigators is “dedicated exclusively” to his research, indicates the prosecution. “No avenue has been ruled out. The investigations are continuing and will continue with intensity,” assures Sofiane Saboulard, public prosecutor of Bar-Le-Duce.