The reports said the International Atomic Energy Agency (IAEA) has confirmed new constructions at Fordow.
David Albright, a nuclear weapons expert and president of ISIS, told Iran International his technical report came in response to Iran's announcement that it's going to rapidly deploy 1400 advanced centrifuges.
The advancement, Albright said, came as a surprise
"People didn't know they had that many [centrifuges] ready to go... At the Fordow plant, the centrifuges are called the IR-6s and it's the most advanced centrifuge Iran operates," said Albright.
The 1,400 advanced machines would increase Fordow’s capacity by 360 percent, according to Albright. The plant is a deeply buried facility that is very hard to destroy.
The Washington Post also reported that the major expansion underway inside Fordow could soon triple the site’s production of enriched uranium, according to confidential documents and analysis by weapons experts.
Albright said that within a month, Iran could produce enough weapons-grade uranium for five nuclear weapons at Fordow.
The reports come amid growing concern about Iran’s nuclear program, which has grown rapidly in the last few years, while access has been limited and many UN inspectors have been kept out.