In Japan, three workers at the Fukushima nuclear plant have been exposed to high radiation amid intensified efforts to restore critical cooling system at the troubled facility. Japan's Nuclear and Industrial Safety Agency said that three workers were exposed to high radiation while laying cable at the No.3 reactor's turbine building on Thursday. Two of them were hospitalised and diagnosed with possible beta ray burns. Meanwhile, more countries have stopped food imports from tsunami-ravaged Japan due to contamination fears. Australia, Singapore, Hong Kong, Philippines, Canada and Russia placed restrictions on imports of Japanese food after the US slapped a ban on dairy products and vegetables. Other countries, including South Korea are considering similar measures, two weeks after the March 11 quake of magnitude 9 and massive tsunami left over 26,000 people dead or unaccounted for. Japanese authorities are planning to import bottled water as stores in Tokyo are running out of the commodity. Chief Cabinet Secretary Yukio Edano said that the government will also ask manufactures to increase their output of bottled water.