"Due to the fact that none of the candidates was able to get a majority of votes, according to the law, the second round of elections will be held across the country on Friday, July 5," Eslami was quoted as saying by the IRNA news agency.
The four candidates for the presidential position were Mostafa Pourmohammadi, Saeed Jalili, Masoud Pezeshkian and Mohammad Bagher Ghalibaf.
The presidential election in Iran was held on Friday, June 28. According to IRNA, over 24.5 million votes have been counted from more than 58,000 polling stations across 482 areas of Iran.
To win the presidential election in Iran, a candidate needs more than 50% of the votes. If no candidate achieves this, a second round will be held on July 5 between the top two candidates.
In the first round, Pezeshkian, who served as minister of health under former President Mohammad Khatami, is leading with over 10.4 million votes. His main rival, Saeed Jalili, a representative of Iran's supreme leader in the Supreme National Security Council and a former lead nuclear negotiator, trails by about one million votes, having received over 9.4 million votes.
Mohammad Bagher Ghalibaf, the Iranian Parliament speaker, is in third place with over 3.3 million votes, while Mostafa Pourmohammadi, a former interior minister, is last with over 206,000 votes.
The president of Iran is the second most important politician in the country after the Supreme Leader Ayatollah Ali Khamenei. The president's duties include implementing the Constitution and leading the executive branch. The new president will influence the overall direction of Iran's foreign policy.
The snap elections were called following the death of President Ebrahim Raisi, Foreign Minister Hossein Amir-Abdollahian, and other officials in a helicopter crash on May 19. According to IRNA, the crash was caused by a technical malfunction. First Vice President Mohammad Mokhber is acting as president until the new election.