Tokyo - School children have been evacuated to higher ground on some islands and buildings swayed in Taipei after a strong earthquake struck Monday in seas east of Taiwan and south of Okinawa, Japan.
Japan's Meteorological Agency issued a warning for a tsunami of up to 1m, but it was cancelled just over an hour later. The public broadcaster NHK said there were no initial reports of damage.
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The epicentre of the magnitude 6.8 quake was at a shallow point near the Yonaguni islands, the agency said.
It said no tsunami was detected.
Television footage of the area showed calm seas, but as a precaution school children in some low-lying areas of islands in the area were evacuated to safer locations.