TEHRAN, May 26, 2012 (AFP) - Iran downplayed on Saturday as a "technical" issue a report by the UN atomic watchdog revealing that uranium traces of a higher grade than any found before had been detected.

Higher-than-expected traces of enriched uranium "are a normal technical issue that is being investigated by (IAEA) experts," Iran's envoy to the International Atomic Energy Agency Ali Asghar Soltanieh was quoted as telling the official IRNA news agency.

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