The Saudi-led coalition said it launched air strikes overnight on Houthi military targets in Sanaa on Monday. The coalition said on Tuesday that its air strikes on Sanaa struck caves storing missiles, drones and weapons.

The assault appeared to be in response to Houthi attacks on energy assets in neighbouring Saudi Arabia on Saturday.

The violence and cracks in the coalition could hamper United Nations efforts to push forward peace agreements and talks to end a war that has killed tens of thousands and driven the poorest Arabian Peninsula country to the brink of famine.

The Western-backed, Sunni Muslim coalition intervened in Yemen in March 2015 against the Houthi movement that ousted the internationally recognised government of Abd-Rabbu Mansour Hadi from power in Sanaa in late 2014.

-Agencies

-File photo