Twelve people have died and 309 others sustained injuries following an attack on King Khalid International Airport in Riyadh, Saudi Arabia, according to the country’s General Authority of Civil Aviation.

The incident occurred on Saturday, October 10, marking the third reported attack on the airport within a week, the Saudi Gazette reported on Sunday, citing the aviation authority.

Among those killed were four Saudi nationals, two Bangladeshi citizens and one person each from the United States, Egypt, Jordan, Syria, Palestine and Sudan.

The aviation authority said all the injured had been taken to hospitals for medical attention, with some reported to be in critical condition.

The attack also damaged parts of the airport, prompting authorities to begin assessing the extent of the destruction. Airport operations were temporarily halted to allow security officials to inspect the facilities and ensure the safety of passengers, workers and aviation infrastructure.

Reuters reported that Saudi authorities and the Saudi-led coalition had accused Yemen’s Houthi movement of carrying out the attack. However, the group had not publicly claimed responsibility for the incident as of the report.

The latest attack follows two separate incidents at the airport on Thursday, which reportedly left three Saudi nationals dead and several others injured.

The developments come as Saudi Arabia and the Houthi movement continue to exchange strikes, raising concerns over the safety of civilian infrastructure and people in the region.