Five unidentified drones spotted over central Paris

The drones were sighted near the US embassy in the French capital, the Eiffel Tower, the Place de la Concorde and the Invalides military museum between midnight and 6 am Tuesday. French police are investigating the flyovers. "It could be a coordinated action but we don't know for now," said a source close the inquiry, after police failed to catch the drones’ operators.