An earthquake with a preliminary magnitude of 4.9, which measured a weak 5 on Japan's intensity scale, was detected at a depth of 20 kilometers in the Fuji Five Lakes area of eastern Yamanashi Prefecture on Friday.
There was no threat of a tsunami, according to the Meteorological Agency.
The quake, which occurred at around 6:37 a.m., was also felt in parts of Tokyo and neighboring areas.
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