A powerful earthquake has shaken Tokyo, wobbling high rise buildings in the Japanese capital for 30 seconds.
The US Geological Survey reports the magnitude 5.7 quake had a depth of 9 kilometres.
The ABC reports that in the capital, high-rise buildings shook for more than half a minute.
The shallow quake was felt over a 500-kilometre range of Japan's main island of Honshu - from Akita in the north to Shizuoka in the south.
Nuclear plants in the affected area have reported no problems, while bullet trains are running again after a short suspension.
Japan's meteorological agency said no tsunami warning had been issued.