French justice is targeting three leaders of a hacker group linked to the Revolutionary Guards.
Behind the supermarket refrigerators hacked remotely, it is therefore the Iranian trail that French authorities are highlighting.
In France, this group is said to have succeeded in remotely taking control of several hundred refrigerators.
Appliances remained out of service. Tons of foodstuffs were thrown away.
Belgium, Finland and Estonia are among the countries concerned.
The General Directorate for Internal Security has uncovered an attack modus operandi characteristic of this unit.
The same type of attack also targeted supermarkets in other European countries last week.
The process described consists of raising thermostats to render tons of fresh products unfit for consumption.