Iran is refusing to send its low-enriched uranium abroad for further processing, the influential head of parliament's national security and foreign policy committee was quoted as saying on Saturday.

"We do not want to give part of our 1,200 kilos of enriched uranium in order to receive fuel of 20 percent enrichment," Alaeddin Borujerdi told the ISNA news agency.

"This option of giving our enriched uranium gradually or in one go is over now. We are studying how to procure fuel and (Ali Asghar) Soltanieh is negotiating to find a solution," he said of Iran's envoy to the UN atomic watchdog.