Rockets fired by Houthi militiamen killed 14 civilians, most of them children, as fighting intensified for control of Yemen's third largest city, Taiz, residents said on Monday.

The Saudi-led coalition opposing the Houthis also launched air raids on military bases and Houthi positions in the southwestern city during the fighting, residents said, but no casualties were reported.

Fighters loyal to Yemen's exiled government have been contesting control of Taiz — Yemen's cultural capital — with the Houthis since April. Hundreds of combatants and civilians have been killed.