Diplomats said that Tehran has failed to meet requests made by the International Atomic Energy Agency in its attempts to end nearly two decades of nuclear secrecy on the part of the Islamic Republic, reported AP.

The report is likely to confirm… that Tehran continues enriching uranium in defiance of the U.N. Security Council.

The agency has been seeking possession of the blueprints since 2005, when it stumbled upon them among a batch of other documents during its examination of suspect Iranian nuclear activities.

Both the IAEA and other experts have categorized the instructions outlined in the blueprints as having no value outside of a nuclear weapons program.

Senior IAEA officials were refused interviews with at least two top Iranian nuclear officials suspected of possible involvement in a weapons program, they said. One was the leader of a physics laboratory at Lavizan, outside Tehran, which was razed before the agency had a chance to investigate activities there. The other was in charge of developing Iran’s centrifuges, used to enrich uranium.

Additionally, agency experts were denied access to a workshop testing and developing a more advanced kind of centrifuge than Iran is now using for its enrichment program, they said.