The IAEA stated that its observers had access "to all the sites and locations in Iran which it needed to visit" under the agreement's framework.
The International Atomic Energy Agency said Iran was in compliance with the 2015 nuclear deal.
If the deal is so good, why is the Obama administration keeping so many secrets?
Jason Rezaian of "The Washington Post" was said to be among those freed.
The nuclear watchdog warned it will run out of money next month to monitor implementation of nuclear accords unless it gets more funding.
An early draft of a document related to the Iran nuclear agreement reveals protocol for the inspection of Parchin
The U.S. is the largest contributor to the IAEA and funds around a quarter of its annual budget.
Part of the ongoing nuclear negotiations involve lifting the sanctions currently imposed on Iran.
Six countries in negotiations with Iran as U.N. nuclear watchdog says Tehran must address questions over explosives testing.
A deadline for resolving a 12-year-old dispute over Iran's nuclear program may be extended from Monday until March
Israel's friends in Congress will kill any deal with Iran on nuclear proliferation.
"We've been disappointed in their failure thus far to constructively engage on this issue," Ambassador Laura Kennedy said.
Against the UN consensus, Russia is pushing for the issue of Syria's past nuclear activities to be removed from agenda
The U.N. nuclear watchdog said it has seen releases of steam and water indicating that North Korea may be operating a reactor