The next round of talks over Iran’s nuclear program between Tehran and major world powers will be held on June 16-20 in Vienna, Iranian Deputy Foreign Minister Abbas Araqchi says.

Three days of talks concluded on Friday in the Austrian capital without progress between Iran and the so-called P5+1, the five permanent members of the UN Security Council – Britain, China, France, Russia and the United States – plus Germany.

Araqchi told ISNA news agency on Saturday there was “no tangible progress” in the last round of talks.

The two sides were seeking to prepare a draft for a comprehensive plan to end the 10-year dispute over Iran’s contested program.

The US and its allies are seeking an agreement to guarantee that Iran will use its nuclear program solely for peaceful purposes.

Tehran has insisted that it is not seeking nuclear weapons.

At least two more rounds of talks are planned in Vienna before July 20, the first deadline for the agreement.