Following his meeting last month with newly elected Iranian President Ebrahim Raisi, External Affairs Minister S Jaishankar is now likely to attend his swearing-in ceremony.
The swearing-in ceremony is scheduled on August 5 in Tehran.
Raisi, considered close to Iran's Supreme Leader Ayatollah Ali Khamenei, won the presidential election in June by a landslide.
India has already accepted an invitation by Iran for the event, which is likely to be attended by leaders and representatives of a number of countries.
Last month, the external affairs minister called on President-elect Raisi during a stopover at the Iranian capital on his way to Russia.
Jaishankar also held extensive talks with his Iranian counterpart Javad Zarif in Tehran covering a range of key issues including the fast-evolving situation in Afghanistan.
His visit to Iran coincided with Iran's hosting of an intra-Afghan dialogue in the country.
"External Affairs Minister Jaishankar is scheduled to pay a brief visit to Tehran to attend the swearing-in ceremony of Raisi," said one of the persons cited above.
Iran has been a key country for India in the Gulf region.
The two sides have been jointly focusing on improving connectivity between South East Asia and Central Asia.
At a connectivity conference in Tashkent last month, Jaishankar projected Iran's Chabahar Port as a key regional transit hub.
Located in the Sistan-Balochistan province on the energy-rich Iran's southern coast, the Chabahar port is being developed by India, Iran and Afghanistan to boost connectivity and trade ties.
(With PTI inputs)