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An earthquake with a magnitude of 6.1 struck northern Japan early on Monday, local time, with its epicenter in the Southern Tokachi region of Hokkaido Island, according to the Japan Meteorological Agency.

The tremor occurred at a depth of 80 kilometers. There were no preliminary reports of casualties or damage, and no tsunami warning has been issued for the affected areas.

Another powerful earthquake struck off the coast of northern Japan last week, triggering a tsunami alert.