An earthquake with magnitude of 6.3 struck off the east coast of northern Japan on early Monday, No threat of tsunami was detected according to the Japan Meteorological Agency.
The quake occurred off the coast of Iwate, about 310 miles (500 kilometers) north of Tokyo at 7:08 am (2208 GMT) on Monday. center of the quake was 19 miles (30 kilometers) below the sea surface.
