Iran's chief nuclear negotiator Saeed Jalili speaks with journalists at a news conference Tuesday in Tehran. (Saman Aghvami/ISNA/Reuters)

Iran has prepared a new proposal over its uranium enrichment program and is ready to resume talks with the international community, according to Iranian media reports quoting the country's chief nuclear negotiator.

Iran's Arabic-language satellite television channel al-Alam quoted Saeed Jalili as saying Tuesday that Tehran has an "updated" nuclear proposal.

Shortly after the report, White House spokesman Robert Gibbs told reporters that the United States has heard nothing "conclusive" from Iran on an offer to hold talks.

The report of a fresh offer from the Iranian regime comes just a day ahead of a meeting in Germany of envoys from Western nations, China and Russia to discuss further sanctions against Iran over its continuing enrichment program.

On Friday, the International Atomic Energy Agency said it has pressed Tehran to clarify its uranium enrichment activities and reassure the world that it's not trying to build an atomic weapon.

The United States and European nations have threatened to push for increased sanctions against Tehran if the Islamic regime continues its nuclear activities.

Oil-rich Iran has denied allegations from the West and Israel that it is trying to produce a nuclear weapon, and insists its enrichment program is for the peaceful purpose of providing a stable supply of electricity.

The UN Security Council has scheduled a meeting in September to discuss whether to bring further sanctions against Tehran.