A new training course on protecting nuclear facilities against cyber-attacks has been launched by the International Atomic Energy Agency.

A small amount of an explosive substance was discovered on a fork-lift truck at Vattenfall's Ringhals plant in Sweden yesterday. Police said there had been no mechanism for detonation and consequently no risk of explosion.

A Greenpeace stunt has seen a paraglider drop smoke bombs on the Bugey nuclear power plant in France. It comes before a televised debate between President Nicolas Sarkozy and election rival Francois Hollande.

The UK's National Nuclear Laboratory has signed a partnership that will see it work with ARES to offer security simulation software to nuclear and other sites in the country.