Iran’s Islamic Revolutionary Guard Corps (IRGC) has claimed that three oil tankers, including a supertanker carrying more than 2 million barrels of crude oil, struck naval mines and caught fire in the Strait of Hormuz on October 30.

The United States has rejected the claims, which have not been independently verified, Qazinform News Agency reports.

According to the IRGC Navy, the supertanker hit a mine while sailing along a southern shipping route that Tehran considers unauthorized. The explosion reportedly sparked a fire, forcing the crew to abandon the vessel near the entrance to the strategic waterway.

Iranian authorities described the incident as the third tanker explosion reported on October 30 involving vessels attempting to use routes not approved by Tehran.

Earlier, the IRGC Navy said two other tankers had caught fire after striking mines in the strait. Iranian officials claimed the vessels had switched off their navigation and positioning systems and ignored repeated radio warnings before the incidents.

However, Tehran has not disclosed the names of the ships, their operators or flag states, and has provided no details about their crews.

US Central Command (CENTCOM) rejected Iran’s allegations that commercial vessels were hitting naval mines, saying American forces had cleared all internationally recognized primary shipping routes through the Strait of Hormuz. According to the US military, these routes remain free of sea mines and continue to be used by commercial vessels.

Meanwhile, Oman’s Maritime Security Center reported that the Royal Navy of Oman had evacuated 25 crew members from a Panama-flagged commercial vessel following an attack that caused a fire off the coast of Musandam Governorate. The crew received medical assistance after being brought ashore.

Omani authorities did not identify those responsible or provide further details about the vessel. It remains unclear whether the incident was connected to the tanker fires reported by Iran.

The United Kingdom Maritime Trade Operations (UKMTO) also reported an attack on a tanker in the Strait of Hormuz on October 29, approximately 25 nautical miles northeast of Khasab, Oman.

A small boat approached the vessel and attached two explosive devices to its hull. The subsequent blasts triggered an engine-room fire and temporarily disabled the tanker.

The fire was later extinguished, all crew members were reported safe, and the vessel resumed its voyage. No environmental damage was reported.

The Strait of Hormuz is one of the world's most important energy shipping corridors, handling a significant share of global oil and gas supplies. Security concerns in the waterway have intensified since the United States and Israel launched military operations against Iran on February 28.

Tehran has repeatedly warned that vessels attempting to cross the strait without its authorization could face attacks. Washington, meanwhile, maintains that internationally recognized shipping routes remain navigable.