Iran has presented its reply to an offer by world powers to resolve the dispute over its nuclear activities, Fars news agency reported Tuesday.
The reply was delivered to European Union officials by the Iranian ambassador to Brussels, Fars said without giving further details, reported dpa.
The offer by the five United Nations veto powers plus Germany is for far-reaching economic cooperation with Iran, including the field of civilian-sector nuclear power, in return for a pledge by Tehran to refrain from uranium enrichment activities.
On Monday, the United States warned that Iran would face new Security Council sanctions if it did not accept the offer of fresh talks and incentives.
The Security Council's five permanent members - Britain, China, France, Russia and the US - plus Germany were united in their threat to slap additional economic and diplomatic sanctions on Iran if its reaction to the new offer was not positive, US State Department spokesman Gonzalo Gallegos said.
Iran met with a delegation of the permanent Security Council members plus Germany on July 19 in Geneva.