|The crippled Fukushima plant has suffered water leaks and power cuts in recent months|
Japan's nuclear watchdog has said the crippled Fukushima nuclear plant is facing a new "emergency" caused by a build-up of radioactive groundwater.
A barrier built to contain the water has already been breached, the Nuclear Regulatory Authority warned.
This means the amount of contaminated water seeping into the Pacific Ocean could accelerate rapidly, it said.
There has been spate of water leaks and power failures at the plant, devastated by the 2011 earthquake and tsunami. (...)
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