An attacker carrying an Islamist flag killed one person and injured several others Friday at a gas factory in eastern France, according to a legal source, AFP reports.

The suspected attacker entered the factory and set off several small explosive devices, the source said. A decapitated body was found nearby the factory, another source said.

The attack came nearly six months after the Islamist attacks in and around Paris that killed 17 people in January that started with a shooting at satirical magazine Charlie Hebdo.

Interior Minister Bernard Cazeneuve said he would go “immediately” to the scene, his office said.