(CNN) — An explosion has been reported at a nuclear plant in northeastern Japan’s Fukushima prefecture, Japanese public broadcaster NHK said Saturday, citing the country’s nuclear and industrial safety agency.
The Tokyo Electric Company said four workers on the ground were injured, NHK reported.
It was not immediately clear where the blast occurred at the Fukushima Daiichi plant, or what caused it.
NHK said the injured workers were in the process of cooling a nuclear reactor at the plant by injecting water into its core.
Earlier Saturday Japan’s nuclear agency said workers were continuing efforts to cool fuel rods at the plant after a small amount of radioactive material escaped into the air.
The agency said there was a strong possibility that the radioactive cesium monitors detected was caused by the melting of a fuel rod at the plant, adding that engineers were continuing to cool the fuel rods by pumping water around them.
A spokesman for Japan’s Nuclear and Industrial Agency earlier said atomic material had seeped out of one of the five nuclear reactors at the Daiichi plant, located about 160 miles (260 kilometers) north of Tokyo.
Authorities evacuated people living near the reactor after an earthquake and tsunami crippled cooling systems there, as well as at another of the Tokyo Electric Power Company’s nuclear plants.
The evacuations notwithstanding, the nuclear safety agency asserted Saturday that the radiatio… >>>