President Donald Trump on Sunday said he has approved the use of oil from the strategic petroleum reserve if needed after attacks on Saudi Arabia oil facilities may disrupt global supply and push up prices.

“Based on the attack on Saudi Arabia, which may have an impact on oil prices, I have authorized the release of oil from the Strategic Petroleum Reserve, if needed, in a to-be-determined amount sufficient to keep the markets well-supplied,” the president announced in a tweet on Sunday, Sept. 15.

President Trump also said he has “informed all appropriate agencies to expedite approval of the oil pipelines currently in the permitting process in Texas and various other States.”

The president made new instructions after a series of drone attacks on Saudi Arabia’s Abqaiq plant and its Khurais oil field on Saturday, Sept. 14, led to the cut of about 5.7 million barrels of crude oil from the kingdom per day, halving its oil production, according to The Associated Press.

That amount cut into more than 5% of the globe’s daily supply, pushing oil prices up sharply.

Data from CNBC shows Brent crude futures soared $7.79, or 13% to $68.04 per barrel at the open on Sunday, and U.S. West Texas Intermediate jumped $6.45, or 11.6%, to $61.29 per barrel.

Thick black smoke rising from Saudi Aramco’s Abqaiq oil processing facility in Buqyaq, Saudi Arabia, on Sept. 14, 2019. (Planet Labs Inc via AP)

In another tweet on Sunday, President Trump said his administration knows “the culprit” behind the weekend attacks and “are locked and loaded depending on verification,” but “waiting to hear from the Saudis.”

According to CNBC, Yemen’s Houthi rebels claimed responsibility for the drone attacks, but U.S. Secretary of State Mike Pompeo pointed the finger at Iran, accusing Tehran of launching an unprecedented attack on the world’s energy supply. He said there is no evidence the attacks came from Yemen.

Iran’s Foreign Ministry dismissed Pompeo’s allegations as “not comprehensible” and “pointless.”

A commander in Iran’s paramilitary Revolutionary Guard said its forces could strike U.S. military bases across the Mideast with their arsenal of ballistic missiles.

Damage to the infrastructure at Saudi Aramco’s Abaqaiq oil processing facility in Buqyaq, Saudi Arabia., on Sept. 15, 2019 (U.S. government/Digital Globe via AP)

But the U.S.released satellite photos showing what officials said were at least 19 points of impact at two Saudi facilities. Officials said the photos show impacts consistent with the attack coming from the direction of Iran or Iraq, rather than from Yemen to the south.