By @ndy
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Spy balloon, UFO or Dragon Ball? Japan baffled by iron ball washed up on beach
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About 1.5 metres in diameter, the mysterious metal sphere has been the source of intense speculation online
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Fears that it could be a stray mine were dismissed after experts used X-ray technology to examine the object’s interior and found that it was hollow.
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Authorities admitting they have no idea what it is – only that it isn’t about to explode.
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Photographs have been sent to the Japanese self-defence forces and coast guard for further examination.
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Inside a 200 metre enclosed area, explosive experts have been filmed wearing protective uniforms as they examine the ball.
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