This is Rouhani's second visit to Hyderabad and the first after becoming president.
Iranian President Hassan Rouhani will be seeking billions of dollars of Indian investment during a visit to New Delhi, diplomats said, a trip that comes amid U.S. pressure to review a 2015 worldwide nuclear deal and re-impose sanctions on Iran.
During his two-day visit to the city, President Rouhani, who is accompanied by a 21-member delegation, will also meet people of Iranian-origin living in Hyderabad.
Top on the agenda of Rouhani's visit would be the completion of Iran's Chabahar port by India as well as discussions over a potential deal for Indian companies to develop an offshore gas field in Iran.
India committed $85 million in investment for the development of the Shahid Beheshti Port in Iran's southeastern city of Chabahar.
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Having more than tripled its capacity to 8.5 million tonnes of cargo annually, the port will provide India with a crucial access point for trade that bypasses rival Pakistan. India imports oil and gas from Iran, but negotiations have been pending on the Farzad-B gas and oil fields in Iran's southern area, which India has expressed interest in. The oil and gas cooperation will be the other issue on the table.
Rouhani will address the Muslim congregation at Makkah Masjid, after performing the Friday prayers at the historic mosque before leaving for Delhi.
The Iranian president also said Iran and India have similar concerns about the latest regional developments including terrorism.
Indian sources have quoted the South Asian country's Ministry of External Affairs as saying that Rouhani and Modi will "review the progress achieved in bilateral relations and also exchange views on regional and worldwide issues of mutual interest".