Iranian Foreign Ministry said on Saturday that Iran will allow officials from the Non-Aligned Movement to visit nuclear facilities during a summit in Tehran which opens on Sunday and runs until Friday, MNA reported.
The move is intended to show that Iran's nuclear activities are peaceful.
Iran will also schedule trips to industrial and scientific sites, the ministry said.
The visits will be arranged according to the interests of "our guests," the ministry spokesman Ramin Mehmanparast told reporters.
NAM, founded in 1961, has 120 members.
United Nations Secretary-General Ban Ki-Moon said on Aug. 23 that he will attend the gathering in Iran's capital from Aug. 26-31 that will also include Egyptian President Mohamed Morsi and Indian Prime Minister Manmohan Singh.
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