The Head of Iran's Atomic Energy Organization and President Deputy Gholam Reza Aghazadeh has resigned, ISNA reported.
Aghazadeh told ISNA Thursday that President Mahmoud Ahmadinejad has accepted his resignation.
He also approved that he had submitted his resignation to the President 20 days ago.
He gave no detail about the reason behind this decision.
Aghazadeh was appointed as the head of the organization and president's deputy 12 years ago.