World

Media playback is unsupported on your device

Who is flying the mystery drones over France's nuclear sites?

31 October 2014 Last updated at 06:47 GMT

Unmanned aircraft have been seen flying over many of France's nuclear stations and the authorities don't know where they have come from.

Greenpeace, who have previously flown a paraglider over a nuclear plant in France, deny any involvement.

An investigation has been launched, as Ben Bland reports.

Most watched

Top stories

World

UK

Business

Politics

Health

Science & Environment

Technology

Entertainment