Search teams with sniffer dogs combed the area, which is 280 kilometers northwest of Nantes. Divers also took part in the search because the zone lies between two estuaries. The next day, two children's books belonging to Pascal were found in the area near where the suspect and his wife once lived. After that investigators found Sebastien's car in the port of Saint Nazaire, some 60 kilometres from the parents' home to the west.
The sudden disappearance of Charlotte's family left France on tenterhooks as investigators scrambled for clues.
They quizzed Brigitte Troadec's brother-in-law, Hubert Caouissin and his wife, Pascal's sister, Lydie Troadec for nearly 21 hours at the start of the probe. Caouissin told investigators he had fallen out with the family over an inheritance dispute.
But initial suspicions centred on Sebastien Troadec, who had a history of psychological troubles.
The focus shifted after traces of Caouissin's DNA were found at the Troadecs' home in suburban Nantes and then in Sebastien's car, abandoned in the port of Saint-Nazaire about an hour's drive to the west. Meanwhile, Hubert Caouissin's mother told Le Parisien that the claims about an inheritance were 'nonsense'.
Finally during his confession, Hubert Caouissin admitted the murders and told investigators that he burned some of the body parts and buried others after killing the family in his rage over the inheritance dispute and left the remains at his farm.
However, in a bizarre twist, the mother of Pascal Troadec, the father who was brutally murdered along with his family, spoke out about the inheritance of gold treasure that she thinks motivated the slaughter.