An attack on an airport in Dammam, Saudi Arabia, killed at least one person Wednesday, according to the BBC and GB News. Eight people were hurt at King Fahd International Airport, officials said. The US then ordered some of its staff to leave Saudi Arabia.

Saudi Arabia's civil aviation authority first said one resident was killed, GB News reported. Gulf News later reported that the authority said the death toll had risen to two, a Saudi citizen and an Indian resident. The airport has reopened and flights are back to normal, Gulf News reported.

No details of the attack have been given, the BBC reported. Yemen's Houthis have fired missiles and drones at Saudi airports and oil sites, it said. Fighting between the group and Saudi Arabia has grown over the past month.

In a separate attack, a drone was shot down near the Shaybah oil field. Falling debris killed two people and hurt two, the Saudi energy ministry said, according to the BBC and GB News. The ministry did not say who launched the drone.

"The US Department of State issued an ordered departure for non-emergency US government employees and their family members in Saudi Arabia," a department spokesperson said, according to the BBC. GB News named the spokesman as Tommy Pigott.

The statement blamed "Iranian-supported Houthis" for attacks on civilian airports and other key sites, the BBC and GB News reported. The department warned that the fighting could "escalate rapidly," the BBC reported.

Four US officials said US missions in other Gulf states would also send family members home, GB News reported, citing Reuters.

The BBC said an informal truce in Yemen had held for about four years before it broke down in July.

What we know: At least one person died at the airport, and the US has ordered some staff to leave.
What we don't: Who carried out the airport attack and whether the death toll will rise.