A senior Houthi official was killed in a Saudi-led coalition air raid last week, Houthi-run television reported on Monday.

The head of the Houthi administration in northern Yemen, Saleh al-Samad, was killed on Thursday, al-Masirah TV reported. There was no immediate comment from the coalition.

Al-Samad was the most senior Houthi official to be killed by the coalition since it intervened in Yemen's civil war in 2015 to try and push backzthe Houthis after they drove the internationally-recognized government into exile in Riyadh.

Samad was second on the coalition's most wanted list of Houthi leaders, after the group's leader Abdel-Malek al-Houthi. The coalition had offered a $20 million reward for any information that led to Samad's capture, according to Saudi-owned broadcaster al-Arabiya TV.

The death of Samad, the group's Ansarullah political council chief, dealt a big blow to the Houthis in a three-year-old war that has killed more than 10,000 people and unleashed the world's most urgent humanitarian crisis.

Al-Masirah reported that the Houthis had appointed Mahdi al-Mashat, previously director of Abdel Malek al-Houthi's office, to replace Samad.

The coalition says the Houthis are armed and supported by Saudi arch-adversary Iran - charges the group and Tehran deny.

The coalition has carried out thousands of airstrikes in Yemen that have hit schools, markets and hospitals, killing hundreds of people - though it says it does not target civilians.