Elite police officers and riot police (left) guard on Wednesday a parking lot in Torcy, east of Paris, where police found bomb-making material after police broke up a suspected terrorist cell last week. Potassium and sulfur were recovered. (Associated Press)

Elite police officers and riot police (left) guard on Wednesday a parking lot in Torcy, east of Paris, where police found bomb-making material after police broke up a suspected terrorist cell last week. Potassium and sulfur were recovered. (Associated Press)