The reformist candidate in Iran's presidential election won the most votes in the first round and will face the candidate who came in second in a runoff election next week. 

Iran held the presidential election on Friday, but none of the four candidates got over 50% of the total votes, which means a runoff election will occur, according to CNN.

Former nuclear negotiator Saeed Jalili will face Reformist politician Masoud Pezeshkian in a runoff election July 5.

In the first round of votes, Jalili received 38.6% of the votes and Pezeshkian got 42.5%. 

Voter turnout was low at 40% as about 24 million voters of the 60 million eligible cast their ballots. 

The election was held due to the death of Iranian President Ebrahim Raisi last month in a helicopter crash.

Foreign Minister Hossein Amir-Abdollahian and other officials also died in the crash on May 19.