Saudi Arabia’s General Authority of Civil Aviation (GACA) said in a statement on Thursday that the number of people killed in an attack on King Fahd International Airport in the eastern city of Dammam has risen to two – a Saudi national and an Indian resident.

The GACA also said the attack which took place on Wednesday left eight people wounded.

Earlier in the day, two people were killed after Saudi air defences intercepted a drone that was attempting to hit a facility at Saudi Aramco’s Shaybah oilfield, the Ministry of Energy said.

It was the latest in a series of assaults on Saudi infrastructure as conflict intensifies between Houthi forces and the Saudi-backed internationally recognised Yemeni government.

Last week, the kingdom reported that a projectile strike on Riyadh’s King Khalid International Airport on October 11 killed one person and injured 11. On October 10, the civil aviation authority reported that a separate attack on the same airport claimed the lives of 12 people and injured more than 300.

On Wednesday, the US State Department ordered diplomats and family members to depart from its missions in Saudi Arabia amid the ongoing Houthi attacks. There are also plans to withdraw family members from a number of other US missions in the region, US officials told Reuters.

The US embassy in Riyadh issued a security alert on Wednesday about possible further attacks by the Houthis on Saudi Arabia. (Al Jazeera)