Yukiya Amano, Chief of the International Atomic Energy Agency (IAEA), has demanded Iran to grant experts access to the Parchin nuclear facility, RIA Novosti reports.
Amano believes that the base located 30 km south-east of Tehran had negative activities.
The IAEA published a report in late August, stating activities at the base. Authors of the document said that Iranian specialists were taing down buildings and removing earth to cover nuclear experiments.