Tereos, which denies the claims, is accused of "acts of terrorism and complicity in acts of terrorism", according to documents from the anti-terror prosecutor's office seen by AFP.

When CAR released its report in December 2017, Tereos insisted it had "suspended its sorbitol supplies to so-called high-risk areas" shortly after the Mosul discovery.

However, the plaintiffs say an internal company investigation has shown that two shipments of sorbitol were made to Syria in February and July 2017.