Remains of French family found in suspect's estate

FILE - This handout photo provided by the French Police Nationale sent to French police authorities on Feb. 24, 2017, shows portraits of the missing Troadec family. From left, father Pascal Troadec, mother Brigitte Troadec, son Sebastien Troadec, and daughter Charlotte Troadec. French media say the former brother-in-law of a missing French couple has confessed to killing them and their two adult children. (Police Nationale via AP, File) (The Associated Press)

FILE - This Tuesday, Feb. 28, 2017 file photo shows a police car parked outside the house belonging to the missing Troadec family in Orvault, near Nantes, western France. French media say the former brother-in-law of a missing French couple has confessed to killing them and their two adult children. (AP Photo/Laetitia Notarianni, File) (The Associated Press)

FILE - This Tuesday, Feb. 28, 2017 file photo shows the mailbox, sealed by police, of the house belonging to the missing Troadec family in Orvault, near Nantes, western France. French media say the former brother-in-law of a missing French couple has confessed to killing them and their two adult children. (AP Photo/Laetitia Notarianni, File) (The Associated Press)

French authorities say investigators searching a suspected murderer's estate have found human remains and jewelry belonging to the missing family of four whom he confessed to killing with a crowbar.

The prosecutor in the western city of Nantes said Wednesday Hubert Caouissin, the main suspect in the brutal killing of the Troadec couple and their two adult children, is cooperating with investigators searching his 74-acre property in Britanny, some 160 miles from the crime scene.

Earlier this week, Caouissin, the brother-in-law of the missing couple, confessed to killing the family of four with a crowbar and dismembering the corpses over an old inheritance dispute.

He told investigators he buried part of the bodies and burnt other parts.

Caouissin and his partner Lydie Troadec have been charged and jailed.