The Islamic Revolution Guards Corps (IRGC) claims to have launched a US spy throne over Iranian airspace.
The state media reported that the military near Kuhmobarak in the southern Iranian province of Hormozgan hit a drone called the RQ-4 Global Hawk.
The US military has not confirmed or denied the reports.
It comes days after the Pentagon announced the deployment of 1
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Tensions were compounded on Monday, when Iran announced that its supply of low-enriched uranium would hit the next week international powers in 2015 would exceed agreed limits.
Iran increased its output in response to tighter economic sanctions from the US, which had abandoned the groundbreaking nuclear deal last year.
Kuhmobarak, where Iran says it shot down the drone Thursday, is located near the Strait of Hormuz – a key route to global oil supplies.
The US military has not commented directly on the drone's claim but as a spokesman US Central Command told the Associated Press agency that there is no US drone over Iranian territory.