The decision is in compliance with the UN Security Council Resolution of 2006. The central government has notified the decision to prohibit export and import of all items, materials and technologies that could contribute to Iran's enrichment-related activities.

"Direct or indirect export and import of all items, materials, equipment, goods and technology which could contribute to Iran's enrichment-related, reprocessing or heavy water related activities, or to the development of nuclear weapon delivery systems... whether or not originating in Iran to/from Iran is prohibited," the notification issued by Directorate General of Foreign Trade said.

However, there would be some exceptions such as equipment meant for light water reactors and low-enriched uranium when it is incorporated in assembled nuclear fuel elements for such reactors.

The Security Council had voted to impose sanctions against Iran banning supply of nuclear-related technology and materials. The resolution demanded that Tehran should end all uranium enrichment work, which can produce nuclear fuel. Iran says its programme is for peaceful purposes and has vowed to continue.