Austria Iran Nuclear
FILE - In this May 14, 2012 file photo Iran's Ambassador to the International Atomic Energy Agency, IAEA, Ali Asghar Soltanieh waves as he arrives fo...
FILE - In this May 14, 2012 file photo Iran's Ambassador to the International Atomic Energy Agency, IAEA, Ali Asghar Soltanieh waves as he arrives for talks with the International Atomic Energy Agency, IAEA, at the permanent mission of Iran in Vienna, Austria. The U.N. nuclear agency is forming a special Iran team, drawing together sleuths in weapons technology, intelligence analysis, radiation and other fields of expertise as it seeks to add teeth to a long-stalled probe of suspicions that Tehran worked secretly on atomic arms, diplomats tell The Associated Press in a series of interviews reaching into Thursday, Aug. 23, 2012. (AP Photo/Ronald Zak, File)
Austria Iran Nuclear
FILE - In this March 5, 2012 file photo Iran's Ambassador to the International Atomic Energy Agency, IAEA, Ali Asghar Soltanieh smiles as he arrives ...
FILE - In this March 5, 2012 file photo Iran's Ambassador to the International Atomic Energy Agency, IAEA, Ali Asghar Soltanieh smiles as he arrives for the IAEA board of governors meeting at the International Center, in Vienna, Austria. The U.N. nuclear agency is forming a special Iran team, drawing together sleuths in weapons technology, intelligence analysis, radiation and other fields of expertise as it seeks to add teeth to a long-stalled probe of suspicions that Tehran worked secretly on atomic arms, diplomats tell The Associated Press in a series of interviews reaching into Thursday, Aug. 23, 2012. (AP Photo/Ronald Zak, File)
Diplomats say Iran has shrouded a building that the U.N. nuclear agency suspects was used for secret work on nuclear weapons, meaning spy satellites can no longer monitor Tehran's alleged efforts to clean up the site.
For months, satellite images have recorded what the International Atomic Energy Agency suspects is an attempt to sanitize the site. At the same time, Iran has repeatedly rebuffed agency efforts for access _ and did so again Friday.
The diplomats say the main building is now covered in plastic sheeting, shielding any activity there from the outside world. They demanded anonymity because they were not authorized to discuss the issue
Iran denies any interest in nuclear arms.
