TEHRAN: The head of an Iranian think-tank linked to the presidency has resigned after an audiotape leak in which the foreign minister complains over the military's influence, state news agency IRNA said Thursday. Hesamodin Ashena of the Center for Strategic Studies resigned over "the theft" of the three-hour tape of Foreign Minister Mohammad Javad Zarif being interviewed at the CSS.

Ashena, who held the post of Iranian deputy intelligence minister in the 2000s, has headed the centre since 2013 and also serves as adviser to President Hassan Rouhani.

IRNA said he was replaced by Ali Rabiei, the government spokesman, who said Tuesday that Rouhani had ordered an inquiry into the "conspiracy" of the leak.