A magnitude-5.1 earthquake shook eastern Japan on Sunday, swaying tall buildings in the capital Tokyo, the Japanese Meteorological Agency said.
National broadcaster NHK said there was no risk of tsunamis and there were no immediate reports of damage or injuries. The quake was centered northeast of the capital, NHK said.
Japan sits at the juncture of four tectonic plates -- or moving slabs of the earth's outer crust. It is one of the world's most earthquake-prone countries.
Tokyo's metropolitan area is home to some 35 million people, or about a quarter of Japan's population. A quake with an estimated magnitude-8.3 hit Tokyo in 1923, killing 142,000 people. Powerful quakes in 1703, 1782, 1812 and 1855 also caused vast damage in the city.
A powerful magnitude-7.6 struck the divided Himalayan territory of Kashmir on Oct. 8, killing more than 38,000 people on the Pakistani side and more than 1,300 on the Indian side.
