TEHRAN, April 6 (Xinhuanet) -- International Atomic Energy Agency (IAEA) Director General Mohamed ElBaradei arrived here early Tuesday with a warning that Iran needs to prove it was not seekingto develop nuclear weapons.

    "We need to satisfy ourselves there are no undeclared nuclear activities in Iran," said the head of the United Nations nuclear watchdog in Vienna before leaving for Tehran.

    ElBaradei is expected to meet with Iranian President Mohammad Khatami, Chief of Iran's Supreme National Security Council Hassan Rowhani and Gholam Reza Aghazadeh, vice president and chairman of Iran's Nuclear Energy Organization.

    ElBaradei told reporters at IAEA headquarters in Vienna that hewould address two key issues with top Iranian officials: origin oftraces of enriched uranium found in the country, and an advanced P-2 uranium-enrichment centrifuge, capable of making bomb-grade uranium.

    "The international probe into Iran's nuclear program cannot go no forever. I and the international community would like to bring the issue a conclusion," he said.

    The IAEA chief also said he would make it clear that "restoringand accelerating cooperation is in the interests of everyone."

    Repeatedly denying charges that it was developing a secret nuclear program, Iran agreed last year to submit to tougher IAEA inspections and suspend all enrichment-related activities.

    ElBaradei said last month's resolution by the IAEA's 35-member board of governors, which censured Iran for hiding sensitive nuclear activities, showed the board had become "a little bit impatient" and that they would like to see progress.

    Iran suspended IAEA inspections on March 14 in protest of the IAEA resolution. However, it reversed the decision the next day and allowed UN inspectors to return to Iran on March 27. Enditem