The Fukushima nuclear power plant was, however, unaffected. Tokyo Electric Power Co, which operates the Fukushima nuclear plant, reported no irregularities at its nuclear plants after the quake.
A warning for one-metre high tsunami waves was issued near the Miyagi Prefecture coast in northeastern Japan, which was hit by a devastating earthquake and tsunami in March last year. Authorities asked people to move to higher grounds. Sources said later that one-metre high tsunami had hit Miyagi.
The epicentre of Friday's quake was Honshu island. pacific Tsunami Warning Centre sources, however, said that there was no risk of widespread tsunami.