In the northeastern Tohoku region on the Japanese island of Honshu today at 16:34 local time (11:34 MSK), there was another earthquake of magnitude 5.6.
According to ITAR-TASS news agency, it is the seventh earthquake, fixed for the day in the region.
Area underground rumors also covered southern Japan's northernmost island of Hokkaido.
The epicenter was located off the coast of Iwate Prefecture, its center lies at a depth of about 10 kilometers. The strongest tremors were felt in the prefectures of Iwate, Aomori, Miyagi, Akita, Yamagata, Niigata and Fukushima.
Earlier, it was reported that in the northeast of the main Japanese island of Honshu, there have been five earthquakes with a magnitude of 5.5 to 6.3.
The epicenter of the strongest quake was a magnitude 6.3 off the coast of Iwate Prefecture, its center lies at a depth of about 20 km. Tremors were felt in neighboring prefectures of Miyagi, Fukushima, and in 12 other regions of the country, including Tokyo.
Warning of impending tsunami was not announced. The possible casualties or damage were reported.