Oil futures edged up on Thursday supported by renewed escalation between US and Iran, while data showed US crude inventories dropped last week.
Front-month Murban crude futures were steady at $89.99 per barrel, while Brent futures edged up 0.1% to $93.19/bbl.
"Oil prices are trading firmer this morning after further escalation in the Persian Gulf, which eroded hopes for an imminent deal between the US and Iran," ING analysts said.
Reuters reported that Iran's top joint military command abruptly announced the complete closure of the Strait of Hormuz to all commercial vessels and oil tankers, warning that any ships attempting transit through the strategic chokepoint would face immediate military fire.
The escalating rhetoric directly conflicted with a statement issued Wednesday by the US military on X which asserted that commercial shipping traffic was continuing to move in and out of the strait despite the threats.
US forces also reportedly initiated a fresh wave of air and missile strikes targeting multiple military assets inside Iran.
Supporting prices further, US crude oil inventories decreased by 7.2 million barrels to 426.5 mmbbls in the week ended June 5, the Energy Information Administration said in its weekly report on Wednesday.