Vienna (AFP) - The European Union has presented a "final text" in negotiations to revive the Iran nuclear deal , a European official said Monday, expressing hope that an agreement would be reached "within a few weeks."

"We worked for four days, and today the text has been put before the senior delegates. The negotiations have ended and this is the final text. It will not be renegotiated," the source told reporters, on condition of anonymity.

After a months-long stalemate, diplomats from all the signatories (Iran, Russia, China, France, the United Kingdom and France) returned to Vienna last Thursday in an effort to salvage the 2015 agreement.

The 2015 agreement made it possible to lift sanctions against the Islamic Republic in return for reducing its nuclear activities and ensuring the peacefulness of its program.

However, the United States unilaterally withdrew from it in 2018 during the era of its former president, Donald Trump, re-imposing harsh economic sanctions on Iran, which responded by gradually retracting most of its obligations under it.

Iran and the powers participating in the agreement began talks to revive it in April 2021 in Vienna, with the indirect participation of the United States and the facilitation of the European Union.

The European official said, "The ball is now in the court of the (concerned) capitals, and we will see what happens," adding that "a person will not remain in Vienna" for any additional negotiations.

While stressing the "quality" of the text, he said "we very much hope it will be approved" and that an agreement will be reached "within a few weeks".

A major hurdle remains, as Iran is calling on the International Atomic Energy Agency to "completely" end the case of finding traces of nuclear material at undeclared Iranian sites.

Commenting on the matter, the European official said that this issue "has nothing to do with the Joint Comprehensive Plan of Action (the official name of the nuclear deal). Meanwhile, Iran insists that it is essential. I hope Iran will reach an agreement (in this regard) with the IAEA." Atomic energy, as this will facilitate many things.

Iranian Foreign Minister Hossein Amir-Abdollahian said on Sunday, "We believe that the IAEA should fully resolve the remaining (nuclear) safeguards issues by adopting a technical path and distancing itself from politically deviant and non-constructive issues."