Iran's elite Revolutionary Guards fired ballistic missiles from underground for the first time as part of an annual military drill, Amirali Hajizadeh, the head of the aerospace division of the Guards, said in a video posted online by YJC, a news agency linked to Iran's state TV.
The video showed clouds of dust before the missiles streaked into the sky.
The military drill in the Gulf, which began on Tuesday, comes at a time of high tension between Tehran and Washington.
The US military said the drill caused two bases with American troops in the region to go on heightened alert and said Tehran's missile launches were irresponsible.
There have been periodic confrontations in the Gulf in recent years between the Guards and the U.S. military, which has accused the Guards' navy of sending fast-attack boats to harass U.S. warships as they pass the Strait of Hormuz.
The video posted by YJC showed fast-attack boats firing missiles as well as missiles striking a mock-up US aircraft carrier.
Tehran, which opposes the presence of US and other Western navies in the Gulf, holds annual naval war games in phases in the strategic waterway, the conduit for some 30% of all crude and other oil liquids traded by sea.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
Iran Capable Of Producing Fissile Material For Nukes In "1 Or 2 Weeks": US Zuckerberg "Not Planning" To Endorse Biden Or Trump In US Presidential Polls Biden "Absolutely" Staying In US Presidential Race, Says His Campaign Chair "Jindal Group Executive Showed Porn, Groped Me On Flight": Woman To NDTV Over 300 Indian Students Return Home As 105 Bangladeshis Killed In Protests Massive Worldwide Microsoft Outage: Flights, Markets, Stock Exchange Down 1,100 Flights Cancelled In US As Microsoft Outage Disrupts Operations Elon Musk Congratulates PM Modi On Becoming Most Followed Leader On X With Shadow Cabinet, Naveen Patnaik Makes His Intentions Clear Track Latest News Live on NDTV.com and get news updates from India and around the world.