An earthquake has struck southern Japan, bringing down several buildings, a top government spokesman says.
No tsunami warning was issued after the quake, measured at a preliminary magnitude of 6.4.
The earthquake struck at 21:26 (1226 GMT) east of Kumamoto, on the island of Kyushu, the Japan Meteorological Agency says.
The Sendai and Genkai nuclear plants on Kyushu are reported to be operating as normal.
No casualties have yet been reported.
Some train services were suspended as a precautionary measure.
Japan is regularly struck by earthquakes but stringent building codes mean that damage usually does not occur.