Air defence systems in Saudi Arabia intercepted two ballistic missiles from Yemen on Saturday targeting oil refineries in Yanbu, Greek security sources told Reuters, a day after US forces launched fresh air strikes on Iran.
Saudi civil defence had issued several warnings for Yanbu, on the Red Sea, and later said the danger had passed. Civil defence also issued a warning for the port city of Jizan about 1,000 km to the south, close to the Yemeni border.
There were no immediate official reports of damage.
The defence system was operated by Greek military personnel, the sources said. Greece has deployed a US-made Patriot air defence battery in Saudi Arabia since 2021 under an agreement to help protect the kingdom's energy infrastructure.
Meanwhile, US President Donald Trump on Friday vowed "major military punishment" for Tehran and its Houthi allies in Yemen, after the Houthis said they had struck two Saudi tankers in the Red Sea on Thursday.
Trump has threatened in recent days to widen the range of targets to include Iran's energy plants and bridges, send ground forces to seize its oil hub of Kharg Island, and bomb a deep-underground nuclear-linked site known as Pickaxe Mountain, said the report.
The Houthis, who control northern and western Yemen, have declared a naval blockade of Saudi Arabia. The kingdom has been diverting millions of barrels of oil by pipeline each day to the Red Sea to skirt Iran's near-total blockade of the Strait of Hormuz on the Gulf.
A Saudi-led coalition that has been fighting the Houthis in Yemen said it had struck Houthi military sites in recent days after attacks on the Saudi tankers.
Following the exchange of fire early on Saturday, the Houthis' Ansarollah media posted on Telegram that the “Saudi's targeting of civilian facilities in Hodeida and Kamaran island will not go unanswered.”
The US and UK are set to hold a conference in London next week to discuss the Strait of Hormuz, reported the BBC. US Defence Secretary Pete Hegseth and Chairman of the Joint Chiefs of Staff Dan Caine will attend the conference, which was first reported by Axios.
It comes as Israeli Prime Minister Benjamin Netanyahu is scheduled to meet the US president at the White House on Tuesday.