Japan facing 'nuclear nightmare'

Japan is facing a nuclear nightmare after a series of explosions at a power station.

The country's prime minister is warning that radiation from the Fukushima power plant is likely to spread.

The International Atomic Energy Agency says radioactive material has leaked into the atmosphere.

Anyone living within 20km of the site has been warned to move away, and those 10km beyondthat are advised to stay indoors.

Al Jazeera's Harry Fawcett reports from Iwate prefecture