Japan's metrological agency reports that an earthquake with a preliminary magnitude of 6.2 has hit north of Tokyo, causing buildings in the capital city to sway for upwards of 30 seconds.
The agency said the quake hit at 4:23 p.m. (0723 UTC) Monday in the northern part of Tochigi prefecture, about 120 kilometers from Tokyo.
The quake struck at a depth of about 10 kilometers. The agency said no damage or injuries were reported and there was no tsunami warning issued.