Rafsanjani has been transferred to a Tehran hospital on Sunday after a heart failure.
Hossein Mar’ashi told the Tasnim News Agency that measures taken by medical staffs to revive him were futile.
Ayatollah Rafsanjani was the fourth president of Iran. He served as president from 1989 to 1997.
Rafsanjani was elected chairman of the Iranian parliament in 1980 and served until 1989.
He was the head of the Assembly of Experts from 2007 until 2011. He was also head of Iran's Expediency Council ever since 1987.
During the Iran–Iraq War Rafsanjani was the de facto commander-in-chief of the Iranian Armed forces.
