Grossi, 60, who is currently in Washington for an official visit and meetings with senior Biden administration officials, said Tuesday that the agency was able to access and handle sensitive equipment documenting activity at most of the regime's nuclear facilities for surveillance, "except inside the Tessa-Kerg facility."
The facility in question is a centrifuge factory in the north-central province of Alborz which was mysteriously damaged last June.
It contained four surveillance cameras from the IAEA that the authorities had collected and one of them that had been damaged and destroyed. The memory cards of that camera have not been found to date and officials in Iran have blamed Israel for the sabotage.
The diplomat intends to fly to Tehran ahead of the conference of the organization's governors' conference this coming November, and in a statement he gave earlier confirmed that he has spoken to officials in the Islamic Republic and that he is "waiting for news soon".