The Tokai No.2 nuclear power station, around 75 miles north of Tokyo, was halted for checks, while a disused station near the capital was also being checked for damage.
In April, Japan was rocked by two earthquakes which forced over 200,000 people to be evacuated from their homes and left more than 40 dead.
The two earthquakes struck within a day of each other.
5.0 earthquake shakes buildings in Toyko
17 July 2016
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The quake happened north-west of the city but didn`t cause any immediate damage, local media reported.
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