Satellite image that has sparked concern over Iran's cleaning of a nuclear facility suspected of having military elements. Photo: ISIS.

New satellite imagery has raised concern that Iran might be “washing” a building the UN wants to inspect for nuclear activity, Reuters reported.

The UN’s International Atomic Energy Agency suspects that the Islamic Republic has conducted research relating to nuclear weapons production at the Parchin complex, while Iran has denied the report.

Iranian Foreign Ministry spokesman Ramin Mehmanparast said it is not possible to “wash” nuclear activity, according to the Iranian Students’ News Agency.

The Washington, DC-based Institute for Science and International Security said it has satellite imagery that supports the IAEA’s concern, writing on its website about the newfound nuclear activity “outside a building suspected to contain an explosive chamber used to carry out nuclear weapons related experiments.”