Iran's top nuclear negotiator is expected to meet Friday with the head of the U.N. nuclear agency for talks about Iran's nuclear program.
The talks between Iran's Ali Larijani and Mohammed ElBaradei of the International Atomic Energy Agency are scheduled to take place in Vienna.
On Saturday, Larijani is expected to meet in Portugal with European Union foreign policy chief Javier Solana.
Iran has denied a report that quoted the country's interior minister, Mostafa Pour-Mohammadi, as saying Iran has 100 kilograms of enriched uranium and more than 150 tons of uranium gas. An Iranian news agency reported that the minister made the remarks in a speech late Thursday. But Iran's Interior Ministry issued a statement Friday saying the minister was misquoted.
The United Nations Security Council has imposed two rounds of limited sanctions on Iran for its refusal to suspend uranium enrichment, which can be used either to build a nuclear weapon or to generate power.
Earlier this week, Iran's OPEC representative, Hossein Kazempour Ardebili, said the country will not rule out using oil supplies as a "weapon" if the United States takes military action against Tehran.
The United States and its allies accuse Iran of trying to develop nuclear weapons. Iran says its nuclear program is for the peaceful production of energy.
Some information for this report was provided by AFP and Reuters.