Var: investigation to determine the fire's origin

Was the fire that destroyed 7,000 hectares in the Var of natural or human origin ? Intentional or accidental ? To find out, you have to go back to its starting point, a rest area along the A57 motorway. The Vulcain cell, gathering gendarmes, firefighters and foresters, is carrying out an investigation. First, the special cell takes snapshots of the scene. Behind the rubalises, investigators identified the precise starting point of the fire. The area will be toroughly examined.  How did the fire spread and what is its cause? A butt, a lighter, a bottle may contain the key to the investigation.