Powerful 6.7-magnitude earthquake rocks Japan as residents are warned

• A powerful earthquake, measuring magnitude 6.7, struck off the coast of Japan's Miyagi region, north of Tokyo.
• The Japanese government issued emergency warnings to residents in five prefectures following the tremor.
• Japanese authorities rated the earthquake a five on their 1-7 intensity scale.
• Despite the strong tremor, officials confirmed there was no immediate risk of a tsunami.
• The US Geological Survey reported the earthquake's epicentre was 50km east of Ofunato in Miyagi, at a depth of approximately 43km.

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Japan hit by powerful 6.7-magnitude earthquake as warnings issued for five prefectures