Iran will not permit any of its enriched uranium to be transferred outside the country, senior security official Mohsen Rezaei has said.

Rezaei reaffirmed Tehran's rejection of a US proposal to transfer its stockpile of uranium enriched to 60% to a third country, The Caspian Post reports, citing Al Jazeera.

He also said that Russia, which had offered to receive and store the highly enriched uranium, had been informed of Iran's decision.

Although Tehran has repeatedly opposed transferring its uranium abroad, it has not ruled out diluting the material to a lower enrichment level under international supervision.