Saudi-led coalition: the arms used in the attack were almost certainly Iranian, but the attack did not originate from Yemen

Where the investigation stands at present:

The Saudi-led military coalition battling Yemen's Houthi movement said on Monday that the attack on Saudi Arabian oil plants was carried out with Iranian weapons and was not launched from Yemen according to preliminary findings.

Coalition spokesman Colonel Turki al-Malki said that an investigation into Saturday's strikes, which had been claimed by the Iran-aligned Houthi group, was still going on to determine the launch location.

"The preliminary results show that the weapons are Iranian and we are currently working to determine the location ... The terrorist attack did not originate from Yemen as the Houthi militia claimed," Malki told a press conference in Riyadh.

He said authorities would reveal the location from where drones were launched at a future press briefing.

What we do know is that the situation is having a history-making effect on the price of Brent crude:

Oil prices soared after a coordinated attack hit the heart of Saudi Arabia’s oil industry on Saturday, forcing the kingdom to cut its oil output in half.

Brent crude futures, the international benchmark, rose as much as 19.5% to $71.95 per barrel at the open, the biggest intraday jump on record. By early afternoon, the contract was at $69.06, up $8.84 or 14.71%.

I do believe I'll gas up the car when I head out in a few minutes.