A powerful earthquake today struck north-east Japan on the one-month anniversary of the magnitude 9 quake which left nearly 28,000 people dead or missing.
Today's 7.1-magnitude tremor forced the evacuation of workers from the crippled Fukushima nuclear plant (pictured), which was heavily damaged in the first quake on 11 March, the BBC reports.
The epicentre of the quake was in Fukushima prefecture, and struck at a depth of just six miles.
Early reports suggest the plant, which leaked radiation after last month's initial event, has not sustained further damage.
It follows a second earthquake with a magnitude of 7.4 which hit Japan on 7 April.
Today's quake, which sparked a 3ft tsumani warning, struck as Japan said it was extending the evacuation zone around the nuclear plant because of radiation concerns.
To date, police have confirmed that 12,596 people died as a result of the 11 March earthquake and tsunami. A further 14,747 are listed as missing presumed dead.
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