A US security institute has said it had located via satellite imagery a section of a sprawling Iranian military complex where it said an explosion or fire might have taken place earlier this week.
Iran's official IRNA news agency on Monday cited an Iranian defense industry body as saying that two workers were killed in a fire at an explosives factory in an eastern district of Tehran.
An Iranian opposition website, Saham, described the incident as a strong explosion that took place near the Parchin military complex around 30 km southeast of the capital. It did not give a source and the report could not be independently verified.
The Washington-based Institute for Science and International Security (ISIS) said it had obtained commercially available satellite imagery on which six buildings at Parchin appeared damaged or destroyed.
However, the images ISIS issued indicated the site of the possible blast was not the same Parchin location where the UN nuclear agency suspects that Iran, possibly a decade ago, carried out explosives tests that could be relevant for developing a nuclear arms capability. Iran denies any such aim.
The UN International Atomic Energy Agency wants to visit this area of Parchin, but Iran has so far not granted access. Iran says Parchin is a conventional military facility and that its nuclear program is entirely peaceful. It has often accused its enemies of seeking to sabotage its atomic activities.