The report, issued on Monday, lays the blame for the children's deaths on government-backed militias fighting the Houthis in northern Yemen.

The report said most of the children were killed in the fighting but estimated that around 30 percent died of hunger when food supplies to civilians were cut off due to the war.

it also added that over 70,000 children have been displaced in the northern cities of Sa'ada and Amran.

Two hospitals and three clinics were destroyed by the fighting exacted heavy collateral damage on the city of Sa'da and sufficient humanitarian assistance must be delivered to the displaced people and aid convoys must be given safe passage, the report added.