Explosions heard in Riyadh as airport reported closed amid Houthi conflict

Explosions were heard in the Saudi capital on Thursday and Riyadh's airport was reported closed, with smoke seen rising from an aircraft there. The cause remained unclear. The blasts came a day after Houthi strikes on two Saudi airports killed three people and wounded dozens, an escalation the Houthis claimed as the kingdom is drawn deeper into conflict with the Iran-backed group.