International Atomic Energy Agency (IAEA) Director General Yukiya Amano speaks at an annual conference of the Japan Atomic Industry Forum (JAIF), an organisation made up of all major nuclear reactor makers and utilities, in Tokyo April 13, 2015 (Photo: Reuters)
The United Nations' nuclear watchdog said it and Iran would hold a technical meeting in Tehran on Wednesday.
Iran and six world powers struck a framework agreement this month to curb Iran's nuclear programme in exchange for easing Western sanctions.
The U.N.'s International Atomic Energy Agency (IAEA) has said it expected progress this month in its own investigation into Iran's current and past nuclear activities.
Diplomats have voiced concern there could be little progress on the IAEA investigation until a final political deal with world powers is reached.
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