Brent rose toward $73 a barrel, while West Texas Intermediate was above $69. A tanker traveling south reported being hit about 8 nautical miles east of Limah, Oman, causing a fire, UK Maritime Trade Operations said. The vessel was Al Rekayyat, a natural gas carrier, according to people familiar with the matter.

Separately, Axios reported that Iran had fired at least two missiles at commercial ships transiting through the strait, citing a US official. Two vessels were hit and suffered damage, but no casualties were reported, it said.

The strait — which links Persian Gulf producers to global markets — has partially reopened following its near-total closure triggered by the US-Iran war, with a convoy of at least eight Japan-linked ships among recent transits. Still, while traffic is recovering, movements remain below pre-conflict levels.

Oil sank 30% in the second quarter as Washington and Tehran agreed to an interim peace deal, easing concerns over supply disruptions from the Middle East. Global benchmark Brent has fully erased the war premium that had built up in recent months, with some leading banks including Goldman Sachs Group Inc. and Morgan Stanley now warning there’s a risk a glut will return.

“The latest vessel attacks in the Persian Gulf highlight that we are still far away from normalization,” said Warren Patterson, head of commodities strategy for ING Groep NV in Singapore. “A contained response from the US may offer some short term support to oil, but given the bearish sentiment and weakness in the physical market, any bounce will likely be short-lived.”

On Monday, Saudi Aramco said it will lower Arab Light to Asia for next month by $11 a barrel to $1.50 below a benchmark. The last two times it sold the grade at a discount were during price wars in 2020 and 2015.

The move by Riyadh follows a decision at the weekend by OPEC+ members including Saudi Arabia to raise output quotas for next month, adding to the prospect of more supply. While those extra barrels remain theoretical, the decision signals a desire to raise production as conditions normalize.

The attacks “reminds investors that the Middle East de-escalation trade is still fragile,” said Charu Chanana, chief investment strategist at Saxo Markets. “The market may add back a little bit of the Hormuz risk premium, but doesn’t look like we are pricing in a full disruption yet.”

Even so, the broader backdrop remains less supportive for oil prices, Chanana added. OPEC+ is continuing to raise output, gulf supplies are recovering, and the Brent-Dubai market structure has shifted into contango, she said, referring to a bearish pricing pattern that signals a looser near-term physical market.

Further insight into market conditions will come later Tuesday when the US Energy Information Administration issues its Short-Term Energy Outlook. Last month, the agency raised its 2027 forecast for US crude production by 220,000 barrels a day to 13.83 million after prices had rallied amid the war.