Authorities in France say that a man was decapitated during an attack on factory in France belonging to an American gas company. Several others were injured when the attacker (or attackers) set off explosions by driving their vehicle into containers holding gas. Police found the victim’s head—which had been covered in Islamic writings—and a flag with the logo of ISIS at the compound. Police have arrested Yassin Sahli, who had previously been placed on a watchlist for his connection to a radical mosque in the country …