Yemen's Houthi movement vowed Wednesday to continue attacking Saudi Arabian airports and oil facilities following a strike on Saudi Aramco's headquarters in Dhahran that reportedly caused extensive damage.
The warning comes amid escalating cross-border attacks, renewed fighting in Yemen and growing concerns over civilian safety and critical infrastructure.
The Houthis said they launched ballistic missiles, cruise missiles and drones targeting Aramco facilities in Dhahran, King Khalid International Airport and an Aramco refinery in Riyadh.
The group described the operations as retaliation for Saudi-led coalition strikes on Yemen, including attacks on the capital, Sanaa.
Tuesday's strike on Aramco's Dhahran headquarters triggered a fire that spread across several floors, according to three sources cited by Reuters.
Saudi Arabia's Energy Ministry described the fire as limited, while sources said operations continued normally with employees working remotely.
The Saudi-led coalition reported intercepting a Houthi ballistic missile targeting Riyadh on Wednesday.
Loud explosions were heard in the capital, although their cause remained unclear.
Riyadh's international airport has faced four attacks, including Saturday's strike that killed 13 people.
The airport remains closed until October 17, with airlines canceling flights.
Both sides have issued evacuation warnings concerning infrastructure and civilian areas.
Houthi-affiliated Al Masirah television reported four air strikes in Marib's Harib district, although their consequences were not immediately known.
The renewed conflict follows Houthi territorial advances along Yemen's Red Sea coast toward the strategic Bab el-Mandeb Strait last month.
Saudi Arabia subsequently resumed military operations supporting Yemen's internationally recognized government, ending a fragile period of relative calm following the 2022 UN-brokered truce.
The Red Cross warned Wednesday that hospitals across Yemen were struggling with increasing casualties as fighting intensified along multiple fronts.
The World Food Programme reported that Houthi encirclement of Taiz had disrupted humanitarian access for more than 600,000 people, including over 200,000 women and children.
Meanwhile, US President Donald Trump accused the Houthis of intensifying attacks on Saudi infrastructure to raise energy prices ahead of American midterm elections.
The developments underscore the widening regional consequences of Yemen's renewed conflict.