TEHRAN: Iran's state TV says the country has halted its most sensitive uranium enrichment work as part of a landmark deal struck with world powers.

The broadcast said Iran halted its 20 per cent uranium enrichment, which is just steps away from bomb-making materials, by cutting the link feeding cascades enriching uranium in Natanz.

It said international inspectors were present Monday when Iran began implementing its obligations under the historic deal reached in Geneva Nov 24.

They left to monitor the suspension at Fordo, another uranium enrichment site in central Iran.