PARIS, June 14, 2016 (Xinhua) -- Police cordon off a street near the site of the killing of a police officer in Magnanville in suburban Paris, France, on June 14, 2016. French President Francois Hollande on Tuesday called the killing of a senior police officer and his partner by a man who pledged allegiance to the Islamic State (IS) an "incontestably terrorist act." (Xinhua/Li Genxing)
