A moderate earthquake of 4.8 magnitude hit the east coast of Japan's largest island of Honshu on Friday, the U.S. Geological Survey (USGS) reported.
According to the USGS, the quake struck at a depth of 31.1 miles on Friday evening, with its epicenter located 29 miles south of Utsunomiya on Honshu Island and 49 miles north of Tokyo.
No tsunami warning has been issued so far. Also, there were no immediate reports of casualties or damages.
Earthquakes frequently rock Japan as it sits on top of four tectonic plates. The latest tremor comes when Japan is struggling to come to grips with the March 11, 2011 catastrophe that killed more than 15,000 people and caused wide-spread devastation.
The March quake and accompanying tsunami had knocked out the cooling systems at the the Fukushima Daiichi civilian nuclear plant, leading to meltdowns and radiation leaks that are yet to be contained fully.
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