At least 12 people died and 309 were wounded in an attack on the main international airport in Saudi Arabia's capital Riyadh on Saturday afternoon.
Those killed included four Saudi citizens and eight foreign nationals – two Bangladeshis and one each from the US, Egypt, Jordan, Syria, Palestine and Sudan – the General Authority of Civil Aviation said on Sunday.
The attack was the third on King Khalid International Airport this week by the Iran-backed Houthi rebels in Yemen. It was the deadliest strike on Saudi Arabia in more than a decade and no threat alert was sounded by the kingdom's warning system.
The injured, including some in critical condition, were receiving treatment at several hospitals, the aviation authority said.
The UK described the incident as “serious” and airlines including Kuwait’s national carrier cancelled flights.
US President Donald Trump said he planned to speak with Saudi Crown Prince Mohammed bin Salman.
“What happened in Saudi Arabia is not acceptable,” he told reporters on Saturday evening on his return to Washington from a political rally. Earlier in the day, Mr Trump said the US may consider whether to join the Saudi-led coalition fighting the Houthi rebels.
“We may. We’re going to look at it," he said.
US Secretary of State Marco Rubio confirmed an American had been killed in the "reprehensible" attacks.
Hospitals were flooded with wounded brought by ambulance and helicopter, people briefed on the matter said. Some were in critical condition.
This week's two previous attacks on King Khalid International Airport left four people dead and caused heavy damage to a Saudi commercial plane parked on the tarmac. The Saudi-led military coalition vowed to respond to the attacks.
About 260 flights to and from Riyadh were cancelled on Saturday and another 219 were delayed, according to data from air traffic monitor Flightradar24.
The Houthis are facing a ground offensive from the Saudi-led coalition in Yemen. Soldiers from the internationally recognised Yemeni government and the Saudi air force have been working to take back territory seized by the rebels over the past month near the strategic Bab Al Mandeb Strait.
The coalition says it has gained ground, including by retaking the Red Sea port city of Mokha. The Saudi-led group says it aims to “eliminate” the Houthis, who control territory that is home to about 70 per cent of Yemen’s population, including the capital, Sanaa.
Saudi Arabia and the Yemeni government have carried out hundreds of strikes on targets in Houthi-held territory. The Houthis claimed some of the raids have killed civilians including women and children.
