The Saudi-led military coalition fighting Yemen's Houthis struck several of its missile launchers and storage facilities, a spokesman said on Monday, while the Iran-backed group claimed a new attack on Riyadh's international airport.

The coalition's operation came a day after explosions rattled Saudi Arabia's capital and authorities sent text messages to residents warning them of a "hostile aerial threat" to the city, which has been heavily targeted by the Houthis in recent weeks.