Twelve people were killed and 309 injured in a significant attack on King Khalid International Airport in Saudi Arabia's capital, Riyadh, local authorities reported. The fatalities included individuals from Saudi Arabia, Bangladesh, the United States, Jordan, Palestine, Syria, Sudan, and Egypt. Operations at the airport have been suspended following the incident.

The Saudi-led military coalition has vowed to respond to the attack, which it attributed to the Houthis and condemned as a war crime. While the Houthis have not claimed responsibility, they were previously linked to separate strikes on the same airport on Thursday that resulted in three fatalities and damage to an aircraft.

This latest attack marks the deadliest in the Kingdom since May 2015. In addition to the Riyadh airport incident, a projectile also landed near King Fahd International Airport in Dammam, eastern Saudi Arabia, on the same day, according to the coalition. These events follow two prior Houthi attacks on Saudi airports on October 6 and 7, which killed three Saudis, including a pilot.

Authorities stated that some of the injured in Saturday's attack are in critical condition, and the extent of damage to the airport is currently being assessed. An eyewitness described seeing gate 401 hit and people injured, with widespread panic ensuing. News agency Reuters reported seeing over a dozen ambulances responding to the scene.

Saudi-led coalition spokesman Maj Gen Turki al-Maliki described the attack on a passenger terminal as a "full-fledged war crime" that resulted in civilian casualties among passengers and airport staff. U.S. Secretary of State Marco Rubio condemned the attacks and confirmed an American citizen was among the deceased. President Donald Trump indicated the U.S. was considering joining Saudi Arabia in carrying out strikes against the Houthis.

United Nations Secretary General António Guterres expressed deep shock, calling the attacks a violation of international law that must cease immediately. Egypt, Palestine, and Qatar also condemned the strikes. Western embassies in Saudi Arabia issued warnings to their citizens, advising them to avoid the Riyadh airport area until it is secured.

Several Gulf airlines, including Kuwait Airways, have cancelled flights to and from Riyadh, citing the security situation. Aviation tracker Flightradar confirmed that all flights to and from Riyadh have been diverted or cancelled.

The escalation of fighting between Yemen's Saudi-backed government forces and the Iran-aligned Houthis, who control much of Yemen, underscores the volatile regional dynamics. The repeated attacks on Saudi infrastructure highlight the ongoing conflict's reach beyond Yemen's borders.