Several dozen bottles deemed the source of high radiation detected in Tokyo's Setagaya Ward were removed Friday afternoon from under the floor of a house there by government officials.
The bottles, with up to 600 microsieverts per hour of radiation at the surface, were found Thursday in a wooden container beneath the house after the ward detected abnormal levels of airborne radiation in the area.
The Ministry of Education, Culture, Sports, Science and Technology is almost certain the powder inside the bottles is radium, easing public anxiety that the contamination could have been related to the nuclear crisis at the crippled, radioactive cesium-leaking Fukushima Daiichi nuclear plant over 200 kilometers away.
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