Nuclear plant workers
Media playback is unsupported on your device

Japan on 'alert' over radiation

Japanese Prime Minister Naoto Kan has said his government is in a state of maximum alert over the crippled Fukushima nuclear plant.

Plutonium has been detected in soil at the facility and highly radioactive water has leaked from a reactor building.

Officials say the priority remains injecting water to cool the fuel rods.

Chris Hogg reports from Tokyo.

Go to next video: Anti-nuclear protests in Japan