The development triggered a fresh surge in crude prices, with Brent crude futures jumping $3.62, or 3.46 per cent, to $108.23 per barrel as of 2214 GMT, while US West Texas Intermediate (WTI) futures rose $3.15, or 3.15 per cent, to $103.20 per barrel.
The IRGC said its naval forces seized the underwater drone in what it described as a complex intelligence and operational mission, while Iranian state media released images of the vessel.
Brent crude, the international benchmark for oil trading, climbed about 2.7 percent to trade at approximately $100.57 per barrel for November delivery contracts, while the US benchmark, West Texas Intermediate (WTI), rose nearly 2 per cent to around $95 per barrel.
Brent crude futures climbed to an intraday high of $99.46 per barrel, its highest level since July 24, before easing to settle at $97.92. US West Texas Intermediate crude also rose to a six-week high, settling at $93.03 per barrel.
The US Central Command (CENTCOM) said its forces struck the three crude oil carriers after an Iranian aircraft carrier and a guided-missile destroyer came under multiple attacks.
Brent crude, the global benchmark, rose 3.4 percent to $91.10 a barrel, while US West Texas Intermediate (WTI) gained 3.6 percent to $86.40, according to the latest market report.
The United States is set to unveil a new and potentially sweeping round of economic sanctions against Iran, with Treasury Secretary Scott Bessent describing the planned measures as the “single greatest financial offensive ever” against Tehran.
The United States is paying an increasingly heavy price in blood and money for its war with Iran, with Pentagon figures showing that 757 American service members have been wounded and 18 killed since the conflict began.
The latest figures, published in the Pentagon's Defense Casualty Analysis System, represent an addition of 60 wounded personnel to the previous tally and bring the total number of US service members killed or wounded to 775.
Iran launched multiple ballistic missiles targeting US forces in Jordan, with the US military saying all were intercepted.
The attack ended a brief lull in hostilities after weeks of strikes between Washington and Tehran.
CENTCOM described the barrage...
A Boko Haram/Islamic State West Africa Province (BH/ISWAP) fighter has abandoned terrorism and surrendered to troops with an AK-47 rifle and an Improvised Explosive Device in Borno State.