Iran says it has test-fired an anti-aircraft missile near a nuclear site in a military display before talks resume with world powers over Tehran's uranium enrichment program.
The semi-official Fars news agency says the "Hawk" surface-to-air missile system was tested near Arak in central Iran, where a research reactor is under construction.
The report on Wednesday gave no other details. US-made Hawk missiles were purchased by Iran before the 1979 Islamic Revolution, but Iran says it has made its own versions.
The test appeared to be designed to show Iran's resolve to defend its nuclear sites.
Talks with the United States and five other world powers resume in Istanbul on Friday.