Iranian lawmaker Mohammad Karamirad on Wednesday said Iran will formally respond on Thursday to a UN-drafted plan to ship much of its uranium abroad for enrichment.
Iran has been considering the deal - which Western leaders hope will ease concerns over Teheran's controversial nuclear program - for a week now.
Karamirad did not provide details, but Teheran's response is expected to be handed in at the UN nuclear agency in Vienna. Karamirad's remark was reported by the semiofficial ISNA news agency.
Another lawmaker, Alaeddin Boroujerdi, said Iran's top security body will make a final decision on the proposal later Wednesday.
Iran's state media have said the country will agree to the plan's general framework but will demand important changes.