The Food Standards Agency also says it has started its own survey of meat products in UK supermarkets, in association with local authorities.
It will do tests to show whether they contain horse or pig DNA, and if so, how much.
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The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
Cool in the north, warmer air to the south
Police have warned the drug, known locally as "pink champagne", could be deadly.