Newly released satellite imagery shows the aftermath of an Iranian drone attack targeting one of the world's largest oil refineries.
The Ras Tanura refinery — owned by oil giant Saudi Aramco — was temporarily closed while authorities dealt with the emergency.
The country's defence ministry told state television that two drones were intercepted over the refinery on Monday, local time, and the debris caused a fire.
No civilians were injured.
Satellite imagery from Vantor shows in detail large plumes of smoke coming from the refinery.
Ras Tanura produces more than half a million barrels per day, and serves as a critical export terminal for Saudi crude due to its location on the Persian Gulf.
Verified video shows the aftermath from the ground.
This kind of incident is prompting speculation the price of oil could skyrocket if the war continues.
There are conflicting reports on whether oil tankers can pass through the Strait of Hormuz.
It connects the Persian Gulf to the world's oceans.
The region, including Saudi Arabia, Iraq, Iran, UAE, Kuwait, Qatar, Bahrain and Oman, produces 27 per cent of the world's crude oil.
About 20 per cent of global supply needs to go through the critical shipping route.
"If the straits are blocked, we could see $US90 oil on a spike, so it may be wise to fill up your car with some....
