An oil spill and a small explosion have caused minor damage at Japan's crippled nuclear power plant.

An oil spill along with a small explosion have caused minor damage at Japan's crippled nuclear power plant. Officials from Japan's Nuclear and Industrial Safety Agency say workers at the Fukushima Dai-ichi plant found an oil spill within the sea near reactors five and six, which had been shutdown when the earthquake and tsunami struck on March 11th.

He stated an oil fence was being deployed to contain the leak and that officials were checking the amount and scale of the spill and if the oil is radioactive. Meanwhile the Tokyo Electric Power Firm says an explosion workers heard at reactor four was likely from a gas tank and did not trigger any extra radiation leaks. The trigger is becoming investigated. TEPCO has promised to bring the plant under control by January but fears are growing the timeline is too optimistic.

He said, "It was originally just heavy oil and did not have any radioactivity. But it could have picked up some radioactive material within the air although becoming drained. But, I don't feel it was very contaminated."

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