The authorities swarmed a factory outside Lyon, France, on Friday after a man reportedly carrying an Islamic State flag attacked the site, news reports said.
Agence-France Presse, quoting legal sources, said one person was dead and several had been hurt. The agency said an attacker had been arrested at the scene. A report from a local news site said one victim had been decapitated.
The reported assault follows the attacks early this year on the satirical newspaper Charlie Hebdo in Paris and a number of other violent episodes in Europe involving people claiming adherence to radical Islamic groups.
Bernard Cazeneuve, the interior minister, was heading to the scene, his office said.
