An earthquake with a preliminary magnitude of 4.6 shook eastern Japan on Thursday, the Japan Meteorological Agency said. (File pix)

TOKYO: An earthquake with a preliminary magnitude of 4.6 shook eastern Japan on Thursday, the Japan Meteorological Agency said.

The epicentre of the quake, which hit at 9:27 a.m. (0027 GMT), was north of Tokyo in Saitama prefecture, the agency said. The quake was measured at a depth of 50 km (30 miles).

No tsunami warning was issued and there were no immediate reports of damage. -- Reuters

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