Magnitude 7.3 Quake Jolts Japan, Tsunami Warning Issued 

Tokyo: An earthquake with a preliminary magnitude of 7.3 struck northeastern Japan's Fukushima on Tuesday, a weather agency said.

The quake registered lower five on the Japanese seismic scale of seven in northeastern Fukushima prefecture, Xinhua quoted the Japan Meteorological Agency as saying. The epicentre of the quake was at a latitude of 37.3 degrees north and a longitude of 141.6 degrees east and occurred at depth of 60km, said the agency.

The temblor was centred in offshore of northeastern Fukushima prefecture which borders the Pacific Ocean and is to the northeast of the nation's capital city of Tokyo.

A tsunami measuring one metre hit Japan's coast at the stricken Fukushima nuclear plant following earthquake, operator Tokyo Electric Power said.

The tsunami struck at 6:38 am (local time), a TEPCO official told a televised news conference after a magnitude 6.9 earthquake hit the region earlier.

A TEPCO spokesman told AFP that there were no reports of any problems as a result of the wave.