An American researcher said an Israeli airstrike on Saturday hit a building that was part of Iran’s defunct nuclear weapons development program, and he and another researcher said facilities used to mix solid fuel for missiles also were struck.

The assessments based on commercial satellite imagery were reached separately by David Albright, a former UN weapons inspector, and Decker Eveleth, an associate research analyst at CNA, a Washington think tank.

They told Reuters that Israel struck buildings in Parchin, a massive military complex near Tehran. Israel also hit Khojir, according to Eveleth, a sprawling missile production site near Tehran.

Iran’s military said the Israeli warplanes used “very light warheads” to strike border radar systems in the provinces of Ilam, Khuzestan and around Tehran.

Read the full Reuters story here.