An air strike by the Saudi-led coalition on a primary school in northern Yemen on Tuesday killed five people including two children, medical and military sources said.

The headmaster and two other staff members were among those killed in the air raid in the district of Nihm, northeast of the capital Sanaa, which also left 13 wounded, the sources said.

A medical source at Kuwait Hospital in Sanaa confirmed the casualty toll.

Rights groups have repeatedly criticized the coalition over the civilian casualties inflicted by its air strikes on rebel-held regions.

In August, an air strike on a Koranic school in the northern Saada province killed 10 children and wounded 28 others, prompting a UN call for a swift investigation.

Yemen has been since March 26, 2015 under brutal aggression by Saudi-led coalition.

Thousands have been martyred and injured in the attack, with the vast majority of them are civilians.

Riyadh launched the attack on Yemen in a bid to restore power to fugitive ex-president Abd Rabbu Mansour Hadi who is a close ally to Saudi Arabia.

Source: Agencies