Iranian President Mahmoud Ahmadinejad said Monday that Iran was ready to attend nuclear talks at the weekend, DPA reported.
"We are ready for the talks and have no problem with the date either," Ahmadinejad said at a press conference in Tehran.
"We are just still discussing the venue," he said.
The office of EU foreign policy chief Catherine Ashton had suggested negotiations beginning Sunday in Vienna or Geneva.
Iran had preferred the talks with Britain, China, France, Germany, Russia and the United States to be held in Istanbul and also involve the Turkish government.
"We have always been ready for talks and even discussions about nuclear cooperation with the world powers, but we will not make any concessions whatsoever on our nuclear rights, which are absolutely irrevocable," Ahmadinejad said.
Tehran has said it did not want the talks to focus on international demands to suspend its uranium enrichment.
The United Nations has imposed sanctions on Iran numerous times over its nuclear programme, which some countries worried might be used for military purposes, which Iran denied.