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A report by the International Atomic Energy Agency, says Iran's total production of low-enriched uranium has risen by about 15-percent since May to 2.8 tons despite tougher sanctions.
The report, says it remains concerned about possible activity in Iran to develop a nuclear payload, for a missile. The IAEA, has also voiced concerns, over Iran's "repeated objection" to allow its nuclear inspectors, into the country.
The UN agency says this is hampering their nuclear inspection process. In June, Tehran banned two of their inspectors from entering Iran, afer they reported that Iran didn't declared all its nuclear experiments. Tehran says their report is inaccurate.