A strong earthquake with a preliminary magnitude of 6.6 shook central Japan early Tuesday morning, the Japan Meteorological Agency said, though major damage wasn't immediately reported.

日本气象厅(Japan MeteorologicalAgency)周二表示，日本中部周二早间发生强烈地震，初步确定震级为6.6级，不过尚未有重大损失报告。