Iran’s President Hassan Rouhani is on course for a second term in office, preliminary results show.
His main challenger, conservative Ebrahim Raisi, has lodged complaints about alleged voting irregularities.
He accused supporters of President Hassan Rouhani of hundreds of acts of propaganda at voting booths, which are banned under electoral law.
Voting time was extended by five hours, until midnight, amid an unexpectedly high turnout of 70%.
The interior ministry said more than 40 million votes were cast.
Election officials said the extensions to voting hours were due to “requests” and the “enthusiastic participation of people”.
Mr Rouhani promised a moderate vision and outward-looking Iran while campaigning for re-election, and tied his success to the success of the nuclear deal brokered between Iran, the US and other countries in 2015.
US President Donald Trump is opposed to the deal, which eased sanctions on the Middle Eastern country, but his White House renewed it earlier this week.
Source: world bbc