"The European proposal is an excessive demand that is contrary to the nuclear Non-Proliferation Treaty and unacceptable," Alaeddin Brujerdi, head of parliament's national security and foreign policy committee, told conservative newspaper Ressalat.

Britain, France and Germany presented Iran Thursday with a deal to receive valuable nuclear technology if the Islamic republic indefinitely suspended all uranium enrichment activities, according to a document prepared by the Europeans.

Thursday's meeting was to give Iran a last chance to come clean before the International Atomic Energy Agency (IAEA) decides on November 25 whether Iran is cooperating with the UN watchdog on its nuclear activities.

The United States wants the IAEA, which since February 2003 has been investigating US claims that Iran has a covert nuclear weapons programme, to refer Iran to the UN Security Council, which could impose sanctions.

Under the deal offered Thursday, Iran would receive technology including including a light-water reactor which would produce less fissionable material than the heavy-water reactor Tehran is planning to build.

Iran has insisted on its right to uranium enrichment, which makes fuel for civilian reactors but can also manufacture the explosive material for atomic bombs.