HIGHLY ENRICHED URANIUM FOUND AT IRANIAN PLANT

"...inspectors had discovered new traces of highly enriched uranium at an Iranian facility.
...
the nuclear fingerprint of the particles did not match the other samples, an official familiar with the inspections said, raising questions about their origin.
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the agency withheld judgment about where the material came from and whether it could be linked to a secret nuclear program.
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“This is the first case with no known linkage,” said one European diplomat who could not be quoted by name because of diplomatic rules. “But we have to be careful because over time these things can be explained away, at least in theory.”
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“We need to be very concerned that Iran may well be undertaking experiments, and may be undertaking the construction of centrifuge machines, out of sight of I.A.E.A. inspectors.”
..."

Pertinent links:

Highly Enriched Uranium Found at Iranian Plant by Elaince Sciolino


Following is the link to the 6 page report filed by the I.A.E.A. to the U.N.S.C. :

Implementation of the NPT Safeguards Agreement in the Islamic Republic of Iran
August 31, 2006