Tokyo, Dec. 9 -- As of 12:00 on December 9, no information had been received regarding damage to property or casualties involving Vietnamese citizens in areas affected by an earthquake that struck Japan on the evening of the day before, injuring around 30 people. The quake, whose epicentre was located about 80km off the coast of Aomori prefecture in northeastern Japan, caused strong shaking across the region. Authorities initially warned of possible tsunamis of up to 3 metres along the northeastern coastline, including Hokkaido, Aomori and Iwate. These warnings were later downgraded. According to Japanese authorities, small waves of 10-40cm reached parts of the northeastern coast before gradually weakening. As of the morning of December 9...