"(Massimo) Aparo...will visit Iran this coming week. His visit is in line with routine safeguards activities and within the framework of a comprehensive safeguards accord," Kazem Gharibabadi said.
Iran said in April it would begin enriching uranium to 60% purity, a move that would take the uranium much closer to the 90% suitable for a nuclear bomb,
Under parliament's law..., the Atomic Energy Organization was supposed to produce 120 kg of 20 percent enriched uranium in a year.
Britain, France and Germany have expressed "grave concern" over the most recent enrichment announcement, while also rejecting "all escalatory measures by any actor".
A foreign ministry statement on state media called on Iran to avoid escalation and engage seriously in current talks with global powers regarding a 2015 nuclear pact while urging the international community to reach an agreement "with stronger parameters of a longer duration".
Tehran said earlier this week it was pressing ahead with 20% uranium enrichment at an underground nuclear facility.
This action, which has no credible civil justification and carries very significant proliferation-related risks, is in clear violation of Iran's commitments