SANAA, July 28 (Xinhua) -- Yemen's Houthis said they launched a fresh attack towards Abha airport in the southwest of Saudi Arabia on Sunday night, using bomb-laden drones, the group's al-Masirah TV reported.

The attack hit vital facilities in the airport and caused a suspension of the air traffic, it said, citing a statement by the group's military spokesman.

There has been no confirmation from Saudi Arabia yet on the alleged attack.

Houthis have recently stepped up drone attacks on Saudi Arabia, but most of the drones were intercepted by the kingdom's air forces.

Saudi Arabia has been leading an Arab military coalition against Iran-allied Houthis in Yemen for more than four years in support of the exiled internationally-recognized government of Yemeni President Abd-Rabbu Mansour Hadi.