This photo provided by The Paris Police Prefecture Thursday, Jan.8, 2015 shows the suspects Cherif, left, and Said Kouachi  in the newspaper attack along with a plea for witnesses. Police hunted Thursday for two heavily armed men, one with possible links to al-Qaida, in the methodical killing of 12 people at a satirical newspaper that caricatured the Prophet Muhammed. France began a day of national mourning for what its president called "an act of exceptional barbarism. (AP Photo/Prefecture de Police de Paris)

French security forces kill gunmen, end hostage sieges

French police stormed a printing plant north of Paris on Friday, freeing a hostage and killing two brothers linked to al-Qaida.