Tokyo: An earthquake of magnitude 6.2 hit eastern Japan on Saturday, according to the US Geological Survey.
Although a few light injuries were reported, there were no immediate reports of any casualties.
The strong earthquake struck at a depth of 44 km at around 6.40 am (local time) near Kurayoshi city to the west of Osaka.
At least 80,000 households initially suffered blackout, but the power was later restored.
While no tsunami warning has been issued, the local media showed images of some damaged households and properties.
The Japan Meteorological Agency warned of possible strong aftershocks in the next few days.
Japan has been hit by few strong earthquakes in the past couple of years. A massive undersea quake that hit in March 2011 sent a tsunami barrelling into Japan’s northeast coast, leaving more than 18,000 people dead or missing.
In April, two strong earthquakes hit southern Japan’s Kumamoto prefecture followed by more than 1,700 aftershocks, leaving at least 50 dead.