A 5.9 magnitude earthquake hit Japan's Honshu island yesterday, the US Geological Survey said, shaking Fukushima where crippled nuclear power plants are located, but local media said there was no tsunami warning.

USGS said the epicentre was located 42 miles east-northeast of Iwaki on Honshu. It was measured at a depth of 22.9 miles. A spokesman for Tokyo Electric Power said no irregularities have been found at its Fukushima Daiichi or Daini plants. There were no reports of casualties or serious damage.