Aircraft from the Saudi-led alliance launched airstrikes on a Houthi special forces base in Sanaa late on Monday.

Smoke could be seen rising from the camp until the early hours of Tuesday. The military operation known as ‘decisive storm’ is targeting the Houthis.

Also on Monday southern Yemeni militias backed by warplanes from the Saudi-led coalition attacked Houthi fighters across several provinces driving the Shi’ite rebel forces from some of their positions, witnesses and militia sources said.

The southern fighters’ gains came on the 12th day of an air campaign by Saudi Arabia and mainly Gulf Arab allies trying to stem advances by the Iran-allied Houthis, who control the capital Sanaa and have advanced on the southern city of Aden.

The fighting has killed hundreds of people, cut off water and electricity supplies, and led the United Nations children’s agency UNICEF to warn that Yemen is heading towards a humanitarian disaster.

Reporting by Reuters