A Pakistani national was killed and 11 other people were injured in a second attack on Riyadh's King Khalid International Airport on Sunday evening, Saudi Arabia's General Authority of Civil Aviation said early on Monday. The authority added that material damage was still being assessed.

The aviation authority also confirmed that King Fahd International Airport in Dammam, in the east of the kingdom, came under attack on Sunday evening, saying damage assessments and safety checks were under way in coordination with the relevant agencies.

Turki al-Maliki, spokesman for the Saudi-led coalition, said an unidentified projectile struck Terminal 4 at King Khalid airport, sparking a fire, before announcing that air defences had intercepted and destroyed a cruise missile near the airport. The coalition also said it had intercepted and destroyed a drone over the Eastern Province.

The latest strikes came a day after a Saturday afternoon attack on the same airport that, according to the aviation authority, killed 13 people and injured 309, some of them critically. Yemen's Ansar Allah movement, known as the Houthis, claimed responsibility for that attack. Its military spokesman, Yahya Saree, said the group had carried out four operations over 24 hours using ballistic and cruise missiles and drones, hitting the Riyadh and Dammam airports and two Aramco facilities. He warned airlines and travellers against using Saudi airports and airspace, with the exception of Mecca and Medina.

Riyadh airport has extended its suspension of operations, and schools in the capital have switched to remote learning for the week. The Saudi embassy in Kuwait said it was providing buses to bring home citizens whose flights to Riyadh had been cancelled. US President Donald Trump called the attack "unacceptable" and said he would speak with Saudi Crown Prince Mohammed bin Salman.