A Japanese news report claims the nuclear power plant crisis in Fukushima prefecture is level 6 indicating a serious accident on the seven-point International Nuclear Event Scale.

Japanese news daily, Asahi Shinbun, reported Friday that the amount of iodine leaked from the power plant has reached almost thirty to 1-hundred-10 thousand tera Becquerel per hour.

The Chernobyl nuclear accident in 1986 was categorized as level 7, the worst nuclear accident ever in history, while the one occurred on Three Mile Island in the United States in 1979 was recorded as a level 5 incident.

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