A magnitude 2.5 earthquake struck 3.3 km west of Sashiki, Kumamoto, Japan on Saturday at 01:32 pm local time, per volcanodiscovery.com.
Just hours earlier, another weak magnitude 2.5 quake hit the East China Sea, 17 km east of Kami Shima Island, at 05:22 am local time, according to the same source.
The tremors occurred in a seismically active region but did not cause significant damage or injuries, as is typical for such minor quakes.