French officials suspect terrorism in an attack on an American gas factory in Grenoble that left one person decapitated and several others injured. The AP reports the head of the victim was found on a gate at the factory entrance. Local news reports say one of two attackers was carrying an ISIS flag. A vehicle was driven toward the site, which is owned by Air Products, a U.S.-based industrial gases technology company, and “two individuals deliberately rammed a car into the gas containers to trigger an explosion,” a police source told Reuters. Local newspaper Le Dauphine reported that the head of the victim was covered in Arabic script. French president Francois Hollande confirmed that a man suspected of carrying out the attack has been arrested.