Diplomats stationed in the Saudi capital were sheltering in place and international schools took safety measures on Thursday, diplomats and residents told AFP, after explosions echoed across the city.
The explosions heard in Riyadh came hours after the Houthis in Yemen, which borders Saudi Arabia, claimed their latest attack on the kingdom.
The Iran-backed fighters have launched a wave of attacks on Saudi Arabia since they began a major offensive in Yemen against the internationally-recognised, Saudi-backed government there.
