Satellite images appear to show that Israeli airstrikes overnight targeted buildings used to mix fuel for ballistic missiles in Iran, according to the Reuters news agency.

Citing separate assessments by two US researchers, the reports told Israel hit Parchin, a massive military complex near the capital Tehran, and Khojir, a missile production site.

Decker Eveleth, an associate research analyst at the CNA think tank in Washington, said Israeli strikes could “significantly hamper Iran’s ability to mass-produce missiles.”

Israel said three waves of planes hit missile factories and other locations near Tehran and in the west of the country.

Mr. Eveleth said an image from Planet Labs, a commercial satellite firm, showed an Israeli strike destroyed two buildings in Khojir where solid ballistic missile fuel was being mixed.

Planet Labs images of Parchin show Israel destroyed three solid fuel mixing buildings with ballistic missiles and a warehouse, Mr. Eveleth said.

David Albright, a former UN weapons inspector, said he reviewed footage of Parchin that appeared to show an Israeli strike had damaged three buildings.

The footage has not been seen by Sky News.