A powerful earthquake has hit northern Japan, shaking buildings and triggering a tsunami warning.
The tremor registered a magnitude of 7.3, according to public broadcaster NHK.
The Japan Meteorological Agency said the quake struck 60km (36 miles) below the sea off the coast of Fukushima.
It is the same region which was devastated by a magnitude 9.0 quake in March 2011, causing a tsunami which led to an accident at the Fukushima nuclear plant.
There are no immediate reports of casualties.
However, there have been reports of a power outage in parts of Tokyo, situated around 150 miles away from Fukushima.