Radiation hot spots, strontium found in Tokyo area

TOKYO - Small radiation hot spots have been detected in Tokyo and radioactive strontium has been found in nearby Yokohama seven months into the nuclear crisis, stoking worries in the nation's most populated areas far from the crippled Fukushima plant.
The Daiichi nuclear power plant, struck by a huge quake and tsunami in March, released radiation into the atmosphere that was carried by winds and deposited widely by rain and snow in eastern Japan.
Setagaya, a major residential area in Tokyo about 235 km (150 km) southwest of the plant, said this week it found a radioactive hot spot on a sidewalk near schools. The radiation there measured as much as 2.7 microsieverts per hour, higher than some areas in the evacuation zone near the plant.
Washing down the area with water did not help lower the radiation levels, Setagaya Mayor Nobuto Hosaka said but added that the district had been advised that it was safe for people to walk by.