Saudi Aramco logo is pictured at the oil facility in Abqaiq, Saudi Arabia October 12, 2019.Saudi Aramco logo is pictured at the oil facility in Abqaiq, Saudi Arabia October 12, 2019.

A large amount of smoke could be seen above an oil facility in the Saudi Arabian city of Jeddah on Friday, according to multiple media reports.

The Associated Press cited videos of a raging fire at an oil depot, while a source said that a Saudi Aramco facility had been hit in an attack.

The Iran-backed Houthis did not immediately claim they were behind any strike, but a military spokesman said earlier in the day that the group was about to announce an operation in Saudi Arabia.

Just after the news, U.S. West Texas Intermediate crude was up 0.9%. Both traded in negative territory.

When contacted by CNBC, a spokesman for Saudi Aramco was not available.

The North Jeddah Bulk Plant is southeast of the city's international airport, according to the Associated Press. A Formula One race is going to take place this weekend.

On Sunday morning, Saudi authorities confirmed an attack on Aramco facilities last weekend, with the rebels using missiles and drones to target at least six sites across the kingdom.

There were no injuries or deaths, and no impact on the company's supplies to customers, according to the CEO.

Since Riyadh launched its aerial assault on Yemen, the Houthis have carried out thousands of cross-border missile and drone attacks into Saudi Arabia.

Strikes on the Abqaiq and Khurais facilities cut off half the kingdom's oil production in one day.

The world's largest oil processing facility and crude oil stabilization plant is located in the eastern province of the kingdom. The second largest oil field in the country is called Khurais.

The biggest attacks on Saudi oil infrastructure since Saddam Hussein invaded Kuwait in 1990 were in 2019.

This article was contributed to byNatasha Turak.