India, Sept. 8 -- A wave of attacks by the Iranian-backed Houthis on Saudi Arabia early Tuesday wounded 73 people, killing seven, including a child, as tensions escalate between the Iran-backed group and Saudi-backed Yemeni forces.

Maj. Gen. Turki al-Malki, a spokesman of the Saudi-led coalition fighting in Yemen, said the rebels have targeted "civilian and economic facilities" in the Saudi cities of Abha's Jazan, Najran and Khamis Mushait.

He said the Saudi-led coalition "will take all necessary operational measures to deter the terrorist Houthi militia with utmost resolve."

The Houthi attacks came after the rebels accused Saudi Arabia of attacking a prison in Yemen's northern province of Jawf.

The attacks came amid a weekslong escal...