The spokesman of the complaints committee of the Independent Elections Commission, Mohammed Nadir Mohseni, said Sunday that each allegation would be scrutinized so that there would be no question of the outcome of the April 5 vote.
Partial results from the vote-counting are being released later Sunday, with full preliminary results due April 24.
With eight candidates running, it is likely no one will get a majority and a runoff will be held in late May.