The U.N. nuclear agency says Iran will allow inspectors to visit its heavy water reactor as part of an agreement aimed at resolving questions about Iran's nuclear program.
The International Atomic Energy Agency said Friday that Iran agreed to allow U.N. inspectors to visit the reactor at Arak by the end of this month.
The U.N. agency also said the two sides agreed on how to resolve remaining issues regarding Iran's past plutonium experiments.
The agreement follows two days of talks between the two sides that concluded in Tehran Thursday.
The U.N. Security Council has imposed two sets of sanctions on Iran because of its refusal to suspend uranium enrichment.
Enriched uranium and plutonium can be used in building nuclear weapons, but Iran says its nuclear program is for peaceful purposes.
On Thursday, the United States tightened export controls on five Iranian entities with suspected ties to weapons of mass destruction. One of the entities is the Atomic Energy Organization of Iran, which operates nuclear energy facilities in Iran.
The United States and its Western allies accuse Iran of trying to develop nuclear weapons.
Some information for this report was provided by AFP, AP and Reuters.