An earthquake with a magnitude of 6.2 and a lower 5 on the Japanese intensity scale hit off Fukushima Prefecture on Sunday evening.
No tsunami warning was issued.
The strong quake was also felt in Tokyo, about 250 km away, where it shook buildings.
Fukushima Prefecture is home to the crippled Fukushima No. 1 nuclear power plant. It was not immediately clear if the plant was affected.
Via Japan Times