TOKYO, July 8 (Xinhua) -- A strong earthquake measuring 6.0 on the Richter scale hit off the south island of Okinawa, Japan, on Tuesday, Japan's meteorological agency said. The quake struck at 4:42 p.m. (0742 GMT) with the epicenter located in the waters off Okinawa's main island, at a depth of 50 kilometers, the agency said. Okinawa is about 1,600 kilometers southwest of Tokyo and there was no danger of a tsunami, the agency said. There were no immediate reports of damage or injuries from the quake. Earthquakes are common in Japan, one of the world's most seismically...
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