By DPA,
Tokyo : A magnitude 6.6 earthquake hit northern and central Japan Saturday, the Japan Meteorological Agency said.
The agency issued a tsunami warning following the quake.
There were no immediate reports of injuries or damage.
The epicentre was about 10 km under the sea basin off the coast of north-central Fukushima province.
A 20-centimetre tsunami was reported at the coast of Miyagi province of Honsu island.
Vacationers on the beach were warned to stay out of the water.
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