Police sources said the decapitated body was found at the site, along with a flag bearing Islamist inscriptions. One suspect, named as Yassin Sahli, a 35-year-old professional driver, has been arrested and is unconfirmed if another was killed or escaped. Allentown, Pa.-based Air Products makes gases, chemicals and manufacturing equipment. It had 21,200 employees worldwide at the end of 2014. The company’s factory was evacuated and secured following the incident. “Our crisis and emergency response teams have been activated and are working closely with all relevant authorities,” the staff said in a statement. “The anti-terrorist section of the Paris prosecutor has been immediately deployed,”French Interior Minister Bernard Cazeneuve said at the scene of the attack. French President Francois Hollande referred to the incident as a terrorist attack and said all measures would be taken.