Saudi Arabia has agreed to admit an Iranian diplomat to head an office representing Iranian interests in the kingdom, the official Iranian news agency IRNA reported on Sunday, in a rare move after the two rivals broke relations in 2016.

"An informed diplomatic source said Sunday that Saudi Arabia had agreed to grant a visa to the head ... of Iran's interests section," IRNA reported. "Observers saw this... as a positive diplomatic step in the Tehran-Riyadh relations."

The office is expected to be set up within the Swiss diplomatic mission in Saudi Arabia, based on an agreement signed in 2017.

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