A second explosion has hit a Japanese nuclear plant that was damaged in Friday's earthquake, but officials said the reactor core was still intact.
TV footage showed smoke rising from Fukushima Daiichi's reactor 3, two days after an explosion hit reactor 1.
The latest blast, said to have been caused by a hydrogen build-up, injured 11 people, one of them seriously.
Soon afterwards, the government said a third reactor at the plant had lost its cooling system.
Water levels were now falling at reactor 2, which is to be doused with sea water, said government spokesman Yukio Edano.
BBC
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