—Drones launched by Yemen’s Iran-backed insurgents, the Houthis, attacked a massive oil and gas field in Saudi Arabia on Saturday, causing what the kingdom described as a “cowardly sabotage” in the second such recent attack on its crucial energy industry.

The attack on the Shaybah oil field, which produces some 1 million barrels of crude oil a day near the kingdom’s border with the United Arab Emirates, again shows the reach of the Houthis’ drone program. Shaybah sits some 1,200 kilometers (750 miles) from Houthi-controlled territory, underscoring the Houthis’ ability to now strike at both nations, which are mired in Yemen’s yearslong war.

The drone assault also comes amid heightened tensions in the wider Mideast between the United States and Iran, whose supreme leader hosted a top Houthi official days earlier in Tehran.

State media in Saudi Arabia quoted Energy Minister Khalid al-Falih saying: “This terrorist sabotage follows a series of actions, including attacks against oil tankers, aimed at disrupting international oil supplies.

“These acts are not only aimed at Saudi Arabia but also against the global economy.”

He noted that despite the sabotage attempt, production at the oil field had not been affected and no one was wounded in the attack Saturday.

The state-run Saudi Arabian Oil Co., known widely as Saudi Aramco, issued a terse statement acknowledging a “limited fire” at a liquid natural gas facility at Shaybah.

A satellite image obtained by The Associated Press showed black smoke rising just west of the natural gas facility that wasn’t seen in images from prior days. The facility is just north of the airstrip Saudi Aramco built to fly staffers into the remote region.

The Saudi acknowledgement of the attack came hours after Yahia Sarie, a military spokesman for the Houthis, issued a video statement claiming the Houthis launched 10 bomb-laden drones targeting the field in their “biggest-ever” operation. He threatened more attacks would be coming.

“This is in response to their aggression toward us and our people in Yemen,” Sarie said.

Al-Falih linked the attack to a May assault by Houthi drones that targeted the kingdom’s crucial East-West Pipeline, a 1,200-kilometer (746-mile) link between its eastern oil fields and the Red Sea. He also mentioned recent explosions on oil tankers near the Strait of Hormuz that the United States blames on Iranian-planted limpet mines. Iran denies being behind those attacks.

“This act of terrorism and sabotage is only an extension of those acts that have recently targeted the global oil supply chains, including oil pipelines in the kingdom, and oil tankers,” al-Falih said. “This cowardly attack once again highlights the importance of the international community’s response to all terrorist actors who carry out such acts of sabotage, including the Houthi militias.”

Saudi Arabia and the UAE engaged with the Houthis in March 2015 to back the country’s internationally recognized government. The UAE recently began withdrawing troops from the conflict, while UAE-allied separatists recently seized the city of Aden, further complicating the civil war seen as the world’s worst humanitarian crisis.

-Agencies