It says the plant is not yet operational, and is intended only to produce electricity.
Already the leaders of the U.S, the U.K and France have called for inspectors to be allowed to visit the second plant.
Here’s what our World Affairs Correspondent Paul Reynolds sees it :
“Iranian ambitions for this site are not known. It could be that they wanted a back-up in case their main plant at Natanz was attacked. But another fear is that they intended to enrich uranium more highly at the secret plant, to a level suitable for a nuclear explosion.”
Iran is certainly looking at tougher sanctions against it, so what do you make of this ?