Several people were injured in a blast on Wednesday at military explosives producer Eurenco’s site in Bergerac, southwest France, a company official said.
The firm produces military explosives, propellants and fuels. It also makes explosives for civil use.
Emergency services erected a security perimeter and the Bergerac mayor’s office urged the public to stay away from the area.
The Dordogne prefecture said a fire was burning after the explosion.
The cause of the blast was not immediately clear. The company official said “several people” had been hurt but was unable to give a precise figures.
Emergency services remain at the scene, the Dordogne prefecture said.