Diplomats from an unidentified country and a Washington research organisation considered close to the International Atomic Energy Agency have alleged in recent weeks that Iran has covered two buildings at a military site to hide a clean-up of evidence of nuclear weapons related testing.
The International Atomic Energy Agency (IAEA) and Western governments acted this week to escalate their accusations that Iran has "sanitised" a site at its Parchin military complex to hide evidence of nuclear weapons work, showing satellite images of physical changes at the site to IAEA member delegations.