Riyadh’s international airport was hit by a fresh Houthi strike on Sunday, a day after a deadly attack killed at least 12 people, according to multiple reports. The Iran-backed group claimed responsibility for both strikes, warning airlines and travelers to avoid Saudi airports. The latest attack forced authorities to suspend operations at the facility, which remained closed as of Monday.

The strikes mark a sharp escalation in the Yemen war, where Saudi Arabia backs the internationally recognized government against the Houthis. The first attack on Saturday killed 13 people, including an American, making it the deadliest on Saudi soil in over a decade. The Houthis claimed responsibility for the attack, stating that Saudi aircraft targeted Yemen’s capital.

The attacks come as the United States considers joining Saudi Arabia in retaliatory strikes against the Houthis. President Donald Trump said the US is evaluating its response to the escalating violence. The strikes have drawn condemnation from international bodies, including the UN and EU, over the humanitarian impact.

The conflict in Yemen has been ongoing since 2015, with Saudi Arabia leading a coalition against the Houthis, who control large parts of the country. The war has caused a severe humanitarian crisis, with millions facing food shortages and medical aid restrictions. The recent attacks highlight the continued volatility of the region and the risks posed by the ongoing conflict.