Iran's reformist candidate and former Prime Minister Mir-Hossein Mousavi on Friday called himself "definite winner" in the presidential election, Xinhua reports.
"According to the information we have received, I am the definite winner in this presidential election," Mousavi told a news conference late Friday in Tehran.
Iran closed the polling stations at 22:00 p.m. (1730 GMT), but voters already queuing up were allowed to cast their ballots.
Polling stations across Iran opened Friday morning for a closely fought presidential election which pits incumbent President Mahmoud Ahmadinejad against three other candidates.
There are 46.2 million eligible voters for this year's presidential election. A total of 45,713 ballot boxes have been set up throughout the country.