Reactors at two Japanese power plants can no longer cool radioactive substances, a government official said Saturday, adding that a small leak had been detected at one of the facilities. Atomic material has seeped out of one of the Fukushima Daiichi plant's five nuclear reactors, about 160 miles (260 kilometers) north of Tokyo, said Kazuo Kodama, a spokesman for Japan's nuclear regulatory agency. Potentially dangerous problems in cooling radioactive material appear to have cropped up there, as well as at another of the Tokyo Electric Power Co. nuclear plants, Ichiro Fujisaki, Japan's ambassador to the United States, confirmed to CNN. The Fukushima Daini and Fukushima Daiichi power plants are separate facilities located in different towns in northeastern Japan's Fukushima prefecture.
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