622x350French law enforcement officers have been told to erase their social media presence and to carry their weapons at all times because terror sleeper cells have been activated over the last 24 hours in the country, a French police source who attended a briefing Saturday told CNN terror analyst Samuel Laurent. Ahmedy Coulibaly, a suspect killed Friday during a deadly kosher market hostage siege, had made several phone calls about targeting police officers in France, according to the source. The alert came amid word that the lone remaining suspect wanted in connection with a terrorism spree — Hayat Boumeddiene — entered Turkey on January 2, a Turkish prime ministry source told CNN Saturday. More