VIENNA, Jul. 06 (MNA) � A senior Iranian official said on Sunday that drafting the technical annex to the final nuclear agreement between Tehran and the 5+1 is nearing completion with only a few items left unresolved.

�There has been a 70 percent progress in drafting the technical annex of the agreement and some other annexes have been completed up to 90 percent,� said the Iranian official while hoping the remaining issues would be resolved by Tuesday talks.

According to the official, the technical annex - which is one of the five annexations of the final agreement - covers issues such as "nuclear research and development, Fordow nuclear enrichment center, Arak heavy water reactor, and the type of the centrifuges that will be used by Iran for the production of stable isotopes".

The Iranian official�added that the negotiations will continue until Wednesday evening or Thursday morning.

The negotiator further expressed cautious optimism about reaching a final nuclear deal, stressing that the negotiations have been based on the fact that Iran will continue its nuclear activities.

The diplomat also regretted the International Atomic Energy Agency (IAEA) reliance on unauthentic intelligence with regard to the PMD (possible military dimensions) allegations against Tehran, saying It is not a difficult task for Tehran to prove all these claims as baseless and false.

IAEA Director-General Yukiya Amano, who visited Tehran last Thursday, said the agency might eventually prepare a report on allegations about possible military dimensions of Iran's past nuclear activities by the end of 2015.

Iran�s Foreign�Minister Mohammad Javad Zarif while attending a religious ceremony in the Islamic center of Vienna last night told reporters�that the sides are doing all they can to settle the remaining differences, stressing that the results of the negotiations are still unknown.

US Secretary of States John Kerry speaking shortly to the press after his third meeting with Zarif in the negotiations venue in Palais�Coburg on Sunday, admitted to a significant progress in talks that are�underway between Iran and the�5+1 group of countries. �We have had a real progress in talks, and no time in the history of the negotiations had we been closer�to a final deal,� he told reported.

The remarks came as Iran and the six states are in the final phase of their last round of talks in Vienna to draft a final deal to end their over-a-decade-long nuclear standoff.

By Mehr News Agency