The figure has more than doubled since Monday, when levels of radioactive iodine in the sea near reactors 5 and 6 were 1,150 times higher than normal.
Radiation leaks were reported at plant after a powerful earthquake and tsunami struck eastern Japan on March 11, killing more than 11,000 people.
The Russian emergencies ministry said in a report released on Wednesday that radiation levels in Russia`s Far East were within the norm, despite media reports that low levels of radioactive iodine was detected in the Primorye Region.
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Editor: Aditia Maruli Radja
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