Speaking in a televised program on Saturday night, he said that Iran and P5+1 have reached a consensus on the framework of agreement and they are now discussing the details, IRNA reports.

Iran has a full-scale knowledge of the complete cycle of peaceful nuclear technology, Salehi added.

He said that Iran has a stockpile of 90 tons of heavy water and it is producing 20 tons per year which give the country, ability to become an exporter of enriched uranium.

All Iran nuclear facilities including Arak Heavy Water Reactor, Fordo and Natanz would continue their work, the official noted.

He noted that the sanction issue as well as the legal affairs including the inspection-related issues were discussed in Vienna.

If Iran's Parliament approve the additional protocol, Iran will allow the IAEA inspectors to visit non-nuclear sites under some conditions, head of AEOI said.

Meanwhile Iranian negotiating team headed by Foreign Minister Mohammd Javad Zarif left Tehran for New York early Sunday morning.

In New York, Zarif will attend the NPT Review Conference and will deliver a speech at the event moreover, on the sidelines of the conference will meet US Secretary of State John Kerry, EU Foreign Policy Chief Federico Mogherini and some counterparts of the Group 5+1.

Last week, nuclear negotiators headed by Deputy Foreign Minister Abbas Araqchi discussed drafting the text of a comprehensive agreement in Vienna.

Seyyed Abbas Araqchi, a senior Iranian negotiator, also told Press TV on April 24 that Tehran and the P5+1 group had started drafting the text of mechanisms related to the removal of the sanctions imposed on Tehran, PRESS TV reports.