Aeon, the second-biggest retailer in Japan, says that it sold beef from cattle that ate nuclear-contaminated feed, the latest in a series of health scares from radiation leaking from the Fukushima Daiichi nuclear power plant.

Cases of contaminated vegetables, tea, milk, seafood and water have already stoked anxiety in Japan after the world’s worst nuclear crisis since Chernobyl in 1986, despite assurances from officials that the levels are not dangerous.

Aeon says it sold the contaminated beef at a store in Tokyo and at more than a dozen stores in the surrounding area. Radiation continues to spill from the Fukushima Daiichi nuclear power plant more than four months after the March 11 earthquake and tsunami.

Aeon, which trails Seven & I Holdings in the retail sector, says that cattle from Fukushima Prefecture were given animal feed originating from rice straw that exceeded the government’s limits for radioactive cesium.

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