A 5.3-magnitude earthquake struck eastern Japan in the early hours of Saturday -- causing buildings in Tokyo to shake -- but there was no risk of a tsunami, seismologists said.
The 67-kilometer-deep quake hit the southern part of Ibaraki Prefecture, northeast of Tokyo, at 1:10 a.m., the United States Geological Survey reported.
Its epicenter was 35 kilometers from Tokyo and there were no immediate reports of damage.
The quake, which struck just four kilometers from the city of Abiko, was also recorded by Japan's national weather agency.
Japan lies on the so-called "Ring of Fire", a series of seismic fault lines encircling the Pacific Ocean which create frequent seismic and volcanic activity.© (c) 2013 AFP