French Officers Warned ‘Sleeper Cells’ Have Been Activated

French law enforcement officers have been told to delete their social media accounts 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.

According to the report, Ahmedy Coulibaly, who attacked the kosher supermarket in Paris and took hostages, had made several phone calls about targeting police officers in France before he was killed.

The alert came amid word that the lone remaining suspect wanted in connection with the France terrorism spree – Hayat Boumeddiene – entered Turkey on January 2, a Turkish prime ministry source told CNN.

Boumeddiene was tracked by Turkish authorities to a location near the Turkey-Syria border, according to an official in the Turkish Prime Minister’s office.