An earthquake with a preliminary magnitude of 6.0 struck off Japan's northeastern prefecture of Fukushima on Thursday, according to the country's weather agency.
The temblor occurred at 12:16pm local time (3:16am GMT) at a depth of 40 km, measuring 4 on Japan's seismic intensity scale, which peaks at 7, said Japan Meteorological Agency (JMA).
The epicenter was located off the prefecture at a latitude of 37.7 degrees north and a longitude of 141.9 degrees east.
Tremors were also felt in central Tokyo.
No casualties have been reported so far and the JMA has not issued tsunami warnings.