The operator of the Fukushima nuclear plant has ordered workers near the coast to move to higher ground after a 7.6 magnitude earthquake, Japanese broadcaster NHK reported.
Japan's emergency agencies have declared a tsunami warning for the region that includes the crippled nuclear site.
All but two of Japan's 50 reactors have been offline since a magnitude-9.0 earthquake in March 2011 triggered a tsunami which led to massive radiation leaks at the plant 160 miles northeast of Tokyo.
More top news
From children's scooters to chainsaws, National Trading Standards has listed some of the potentially dangerous items it seizes daily.
A study by the University of Oxford forecasts an increase of more than half a million foreign-born people in England between 2011 and 2014.
More deprived areas of England have received the biggest cuts over the last five years, according to an influential think-tank.