An earthquake with a preliminary magnitude of 3.6 struck the western Japan prefecture of Wakayama on Friday but there was no threat of a tsunami, the weather agency said.

The quake occurred at 7:57 a.m., registering 4 on the Japanese seismic intensity scale of 7 in the town of Yuasa, the Japan Meteorological Agency said.

The epicenter, in the northern part of the prefecture, was at a depth of about 10 kilometers, according to the agency.

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