Two powerful earthquakes hit the south-western island of Kyushu last week killing at least 42 people.
Japan`s meteorological agency has also warned that more tremors are likely to hit in the coming days.
More than 1,000 people are injured and there has been widespread damage to buildings, houses, roads and bridges.
About 30,000 rescue workers are looking for survivors. Police said 11 people are still missing, public broadcaster NHK reported.
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