Yemen's Houthis claimed on Monday to have launched drone strikes against Saudi energy giant Aramco's facilities, amid an upsurge in fighting between the insurgents and the Riyadh-backed government in northern Yemen.
Neither Aramco or Saudi authorities immediately reported any attack.
Houthi spokesman Yahya Saree said in a statement carried by the rebels' Al-Masirah television that the strikes took place overnight, in retaliation for the six-year military campaign led by Saudi Arabia in Yemen.
He said the Houthis had targeted Aramco refineries in the western Saudi city of Jeddah and in Jubail in the east, with 10 drones launched at dawn.
He also said the Houthis hit "sensitive military areas" in the southern cities of Khamis Mushait and Jizan, with five drones and two ballistic missiles.
On Sunday, the coalition said it had intercepted and destroyed Houthi drones targeting Khamis Mushait and Jizan.
The Iran-aligned rebels have struck Aramco facilities in the past, underscoring the vulnerability of Saudi Arabia's expensive and strategically vital oil infrastructure.
Last November, the rebels hit an Aramco plant in Jeddah with a Quds-2 missile, tearing a hole in an oil tank and triggering an explosion and fire, the company said.
The rebels' latest claim comes a day after at least 70 pro-government and Houthi fighters were killed in fierce fighting for Yemen's strategic northern city of Marib.
The Houthis have been trying to seize Marib, the capital of an oil-rich region and the government's last significant pocket of territory in the north, since February.
Yemen's civil war pits the Iran-backed rebels against an internationally recognised government backed by a Saudi-led military coalition.
The grinding conflict has claimed tens of thousands of lives and displaced millions, according to international organisations, sparking what the UN calls the world's worst humanitarian crisis.
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