Two oil supertankers struck naval mines and caught fire in the Strait of Hormuz on Saturday, Iran’s Islamic Revolutionary Guard Corps (IRGC) has told RT. Both vessels were carrying about two million barrels of crude oil, Iranian state media reported.

The incidents come amid a wave of attacks on tankers and cargo ships in the region in recent weeks, as talks between the US and Iran remain stalled and tensions persist.

One tanker was reportedly struck by a mine on Saturday morning. The second vessel was immobilized when the mine strike triggered an explosion in its engine room, the IRGC Public Relations Office said.

Both tankers had switched off their positioning and radar systems before attempting to transit the Strait of Hormuz via routes unauthorized by Tehran, it said.

The news comes just days after a container ship sank in the key waterway following what Tehran described as a mine strike. All 21 crew members escaped unharmed.

Iran has demanded that all ships using the Strait of Hormuz first obtain permits from its newly established maritime authority, which was formed in May to formalize control over the waterway.

The US has also struck commercial shipping as part of its naval blockade of Iranian ports, which it imposed in July following the breakdown of talks with Iran.

Last week, US forces disabled the Panama-flagged bulker Ocean Molica in the Gulf of Oman after accusing it of attempting to breach the blockade. US forces have destroyed ten tankers allegedly linked to the IRGC since July, according to CENTCOM.

The fighting has severely disrupted oil shipments through the Strait of Hormuz, which handled around a quarter of global seaborne oil and LNG trade before the war. The disruptions have contributed to rising energy prices worldwide. Brent crude settled at $109.86 per barrel on Friday, up 3.7% and its highest close since May.