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Earthquake in Japan: What you need to know

An earthquake measuring 7.0 on the Richter scale struck northern Japan on Saturday. Here is everything we know:
The shaking started at around 6.10 pm and the epicenter was 54 km below the surface.
No major damage has been reported, however, several people reported minor injuries.
Consequently, a Tsunami warning was issued but was lifted about 90 minutes later.
The Nuclear Regulation Authority said that no abnormalities have been observed in the nuclear reactors in the region
Japan Meteorological Agency has issued a statement asking people to stay away from the coastline as there may be high waves.