A light earthquake struck Ibaraki Prefecture on Sunday, shaking buildings as far away as Tokyo.
But there were no immediate reports of injuries or damage, and there was no risk of tsunami.
The magnitude-4.6 quake struck at around 7:27 p.m. at a depth of 50 km in Ibaraki, the Meteorological Agency said.
It registered as a 4 on the Japanese seismic intensity scale to seven in Ibaraki, Saitama and Tochigi prefectures, and as a 3 in Tokyo, the agency said.
The U.S. Geological Survey said the quake struck 43 km northeast of Tokyo.
The quake comes a day after a magnitude-6.4 temblor jolted southern Taiwan, causing a 17-story apartment building to collapse in the city of Tainan. At least 26 people were killed in that quake and more than 100 are still missing in the rubble.