Reports now talking about a possible meltdown
News of the leak was confirmed by the Japanese government after the walls and roof at Fukushima Number 1 nuclear power plant were destroyed in the blast.Plumes of white smoke were sent billowing into the sky and several workers at the station are thought to be injured.
Residents of the region have been urged to stay indoors, turn off air conditioning units and not to drink tap water.
Radioactivity in the control room at the plant is 1,000 times the normal level - and eight times the normal level in the area immediately outside the site.
It comes after Japan's Nuclear Safety Commission said the plant may be experiencing meltdown….



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EA liveblog
1050 GMT: The evacuation zone around the Fukushima nuclear plant has been extended to 20 km (12.5 miles) by the Government. There is frustration and worries that the Tokyo Electric Power Company, which runs the plants, has not released new radiation readings.
0803 GMT: Al Jazeera English has just reported an explosion at the Fukushima nuclear plant --- not in the reactor core --- which has injured several workers.
0720 GMT: While officials reassured that pressure has been successfully released from the Fukushima No. 1 reactor, Japan's state television NHK says rods in the reactor have begun their meltdown. Cesium and radioactive iodine, have been detected near the reactor.