An earthquake measuring 6.9 on the Richter scale shook the Japanese capital Tokyo and its environs Sunday, Japanese meteorological authorities have reported.
The quake happened at 7.56 pm (1056 GMT), off the eastern coast of Japan.
Buildings in the capital shook during the quake, but no reports of damage or injuries have yet been received.
A Tsunami warning has not been issued by the authorities.
The Japanese islands are one of the world's most earthquake- affected areas.