A strong earthquake with a magnitude of 7.1 has hit off the coast of eastern Japan, shaking buildings in Tokyo.
But there appeared to be no major damage and no tsunami warning was issued after the earthquake struck late on Saturday.
The epicentre of the earthquake was off the coast of Fukushima prefecture at a depth of 60 km, the Japan Meteorological Agency said.
The earthquake shook buildings in the capital.
There were no reports of irregularities at the Tokaimura nuclear facility, public broadcaster NHK said. The Meteorological Agency said no tsunami warning had been issued.
The quake hit off of Fukushima just weeks before the 10-year anniversary of the March 11, 2011 quake that devastated Japan and triggered a massive tsunami that led to the world’s worst nuclear crisis in a quarter of a century.
Earthquakes are common in Japan, one of the world’s most seismically active areas, accounting for about 20 per cent of the world’s earthquakes of magnitude 6 or greater.