( Irna ) - The third round of technical talks between Iran and the International Atomic Energy Agency (IAEA) officials on the P1 and P2 centrifuges began here on Thursday.
The two sides resumed their talks at the premises of Supreme National Security Council (SNSC) within framework of an Iran-IAEA agreement (Action Plan) reached on August 21 to resolve the outstanding issues over the country's peaceful nuclear activities.
They held nine hours of negotiations during the past two days.
Tehran is to present written responses to several questions put forward by IAEA on the P1 and P2 centrifuges in August.
Iran's written responses to the agency's questions would be followed up in another meeting between the two sides expected to be held in mid-October.
Informed sources said that the IAEA would review Iran's responses to the agency's questions about the centrifuges and present its final report in November.
Likely closure of the centrifuges P1 and P2 cases would open discussion on the subject of contamination.
The talks were co-chaired by the SNSC Deputy Secretary for International Affairs, Javad Vaeedi, and deputy IAEA Chief for Safeguards, Olli Heinonen.
Heinonen arrived in Tehran early Tuesday morning at the head of a delegation of IAEA technical experts.
The former round of talks regarding centrifuges were held in Tehran on September 24-25.
The initiative to resolve the outstanding issues about Iranian nuclear program was put forward after three rounds of talks between top Iranian nuclear negotiator Ali Larijani and EU foreign policy chief Javier Solana in Madrid and Larijani's negotiations with the IAEA Director-General Mohamed ElBaradei in Vienna.
The case of Plutonium and contamination in Karaj has been closed so far according to the work plan.
Deputy Head of the Atomic Energy Organization of Iran for International Affairs Mohammad Saeedi and Iran's permanent ambassador to the IAEA Ali-Asghar Soltaniyeh are also present at the talks.