An attack by Yemen’s Houthis on southern Saudi Arabia wounded 11 civilians on Thursday, a military official said, as the kingdom warned that coordinated attacks by the Houthis and Iran-backed Iraqi militias were imminent.

Maj.?Gen. Turki al-Maliki, spokesman for the ?Saudi-led military coalition supporting Yemen’s internationally recognized government, said early Friday the attack in southern Najran Province injured ?seven Saudis, ?one Yemeni, two Egyptians and one Pakistani national.

The victims included a 4-year-old child who ?suffered second-degree burns.