One person has been beheaded and at least two others injured, since suspected terrorists rammed a car into a U.S.-owned factory near Lyon, south East France.
A suspect known to security forces has already been detained when he was tackled by a local firefighter, French interior minister Bernard Cazeneuve, told reporters at the site.
There were also media reports of the decapitated head being found covered in Arabic writing, on the site of the gas plant of U.S. industrial group Air Products. Reuters also cited police sources saying a flag bearing Islamist inscriptions was found at the site.
Cazeneuve said one suspect, 35-year-old Yassin Sahli, had been arrested, according to Reuters.
Air Products has confirmed the attack took place in its facility in L'Isle-d'Abeau, which is around 19 miles from the city of Lyon.
"Emergency services are on site and have contained the situation. All individuals working at the site have been evacuated. The site is secure. Our crisis and emergency response teams have been activated and are working closely with all relevant authorities," the international company said in a statement on its website.