The Japanese NHK information web page informs that, Japan's nuclear safety agency says a possible radiation leak from the Number Two reactor may have caused the sharp increase in radiation levels on Wednesday at the Fukushima Daiichi nuclear power station, north of Tokyo.
The Nuclear and Industrial Safety Agency told reporters on Wednesday that the level of radiation near the plant's main gate rose to 10 millisieverts per hour at 10:40 AM, but dropped to 2.7 millisieverts per hour within 30 minutes.
The agency said the radiation increase prompted workers at the plant to temporarily evacuate.
The agency said Tokyo Electric Power Company suspects that the increase was caused by the Number Two reactor. The reactor's pressure control facility, called the suppression pool, has been damaged.
