UN Secretary General Ban Ki-Moon heading a UN delegation departed New York for Tehran to attend the 16th NAM Summit, IRNA reported.
Spokesman of Ban Ki-Moon said on Tuesday that the secretary general is to discuss different international and regional issues with Iranian senior officials.
Martin Nesirky said details of the meetings will be published soon.
The spokesman added that the secretary general will leave Tehran on Saturday.
He had already said that the secretary general was under pressures by Israel and the West to cancel his visit to Iran.
He added that in spite of a number of requests to cancel the visit, the secretary general believes that lack of participation of the UN in the highest level would be unacceptable, because two thirds of the UN members are members of NAM.