"How have the G-8 countries proved that the Iranian presidential election had irregularities? How can they interfere in the domestic affairs of Iran?" the ambassador said, while stressing that there is "no legal problem" in the police authorities' move to repress demonstrators who have turned violent.
The ambassador also said during an interview with Kyodo News through a translator that Iranian authorities are proceeding with investigations on clashes that involved fatalities.
The unrest in Iran following the June 12 presidential election is drawing attention from other countries, with Italy, chair of the G-8 foreign ministerial meeting, reportedly saying that the conference will take a "tough" stance against Iran's crackdown on protests against election results.
"We will adopt a particularly tough and clear position," Italian Foreign Minister Franco Frattini said ahead of the three-day foreign ministers' conference, which started Thursday in Italy, according to the Italian ANSA news agency.
The Iranian ambassador, however, criticized possible moves by the ministers to work out a message or statement on the issue, saying, "If something like that takes place, it will be the biggest mistake for them."
The G-8 groups Britain, Canada, France, Germany, Italy, Japan, Russia and the United States.
Specifically on Japan, which has remained relatively subdued in its response to the issue, the ambassador said that Tokyo is taking a "well-considered" stance compared to European countries or the United States, and that the issue will not have an impact on bilateral ties, which have a long history and firm basis.
The strong bilateral ties would also "not be affected largely" in the event that Japan's main opposition Democratic Party of Japan ousts the long-ruling Liberal Democratic Party possibly in the next House of Representatives election to be held by the fall, he added.
Iran's presidential election, in which Mahmoud Ahmadinejad officially won a second term, has triggered protests from backers of defeated candidate Mir Hossein Mousavi, who alleges irregularities in the election.
