Consumers have a right to expect that food is exactly what it says on the label.
While bute presents very low risk to human health, the Food Standards Agency is investigating this specific horsemeat contamination case and will take action as necessary.
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Explosives experts were called to the nuclear reprocessing site in Cumbria, to help deal with chemical substances.
The arrests were made on suspicion of producing and disseminating pedophilia content on the internet, the country's Justice Ministry said.
The A4-sized sketch originally went for £75 when it was first sold.