Both countries agreed to end a diplomatic rift under a China-mediated deal in March.
“We consider today an important day in the relations of the Islamic Republic of Iran and the Kingdom of Saudi Arabia,” Iranian Deputy Foreign Minister Alireza Bigdeli told a flag-raising ceremony.
“The cooperation between the countries is entering a new era,” he added.
“Iran’s embassy in Riyadh, our Consulate General in Jeddah and our office to the Organization of Islamic Cooperation will be officially reopened on Tuesday and Wednesday,” Iranian foreign ministry spokesman Nasser Kanaani said on Monday.
