Iran has rejected a request from European nations to briefly delay their submission of proposals intended to resolve a dispute over Tehran's nuclear program.

Iran's nuclear negotiator said Saturday that the European Union had requested extending Monday's deadline until the following Sunday, but Iran rejects any delay.

He also expressed concern that the proposals, a package of economic and political incentives, would not meet Iran's basic expectations.

The Europeans want Iran to agree to a permanent suspension of its uranium enrichment program, which can be used for both generating electricity, but in certain forms can fuel nuclear weapons. Iran says its nuclear program is for peaceful purposes, but the United States accuses Tehran of trying secretly to develop nuclear weapons.