The bodies of the couple were found around 12:20 on Thursday in their house in the farm of the Sands, in the countryside north of Toulouse.
The opening was made by a neighbor who went to check them when they could not come for a planned dog walk.
The area around their separate house was sealed while investigations were conducted, and local police raised Toulouse expert assistance.
Forensic staff conducted a crime on Thursday, with a helicopter, drone, criminal investigation techniques and a medical doctor located on this place.
The criminal case has not yet begun, and the police say there is no overwhelming theory of how the couple died.
