RIYADH: Saudi Arabia said on Friday that three people including a pilot were killed in attacks on Riyadh's international airport the day before, after Yemen's Houthis claimed a series of attacks targeting the facility.

The conflict between the Houthis and Yemen's Saudi-backed government has spilled over into the kingdom, with the Iran-backed fighters staging repeated attacks on Saudi targets since launching a lightning offensive just across the border.

In addition to seizing large swathes of territory along the Red Sea coast in Yemen, the Houthis have used missiles and drones to attack Saudi transport hubs, oil facilities and other civilian targets in the world's largest crude exporter.

The Saudi civil aviation authority said two attacks on Thursday on the Saudi capital's airport and a Saudia airlines plane there "resulted in the martyrdom of three citizens."