RIYADH — The Arab coalition intercepted a Houthi drone targeting the Saudi city of Khamis Mushayt on Sunday, state news agency SPA reported. It was the latest in a spate of attacks launched by the Iranian-backed militia, and just hours after the Houthis had targeted the same southwestern Saudi city in a matter of hours. The Sunday morning attack was launched from the Yemeni city of Sanaa. There were also several drones that hit the Saudi Shaybah natural gas liquefaction plant near the UAE border earlier this month. Arab coalition spokesman Col. Turki Al-Maliki later told media that all attempts by the militia to attack Saudi Arabia would be thwarted. And he said that the continued targeting of civilian areas including airports was in direct violation of international law. The coalition will continue to adopt deterrent measures against these terrorist militias so as to neutralize and destroy their capabilities, in strict accordance with international humanitarian law and its customary rules, Al-Maliki said. A Houthi military spokesman cited by the group's Al-Masirah TV earlier said the group had launched drones targeting the control towers of the Abha airport and the Khamis Mushayt airbase. The Houthis, who control Sanaa, the Yemeni capital, have stepped up their attacks against targets in Saudi Arabia in the past few months.