A dozen children have been killed by Saudi-led airstrikes in a village in northern Yemen, the United Nations (UN) said.

Medical sources quoted by the organisation said the attack in Kushar in Hajja province, killed 10 women and 12 children.

Another 30 people, including 14 under the age of 18, were wounded in the northern district, which is home to 100,000 people, was shelled.

Lise Grande, a UN Coordinator based in Yemen, said: “Many of the injured children have been sent to hospitals in Abs district and in Sanaa for treatment and several require possible evacuation to survive.”

Rights groups and the UN have criticised the Saudi-led and Western-backed coalition for air strikes that have often hit civilians, although the alliance denies doing so intentionally.

The children wounded in Yemen's war Show all 15 1 /15 The children wounded in Yemen's war The children wounded in Yemen's war Save the Children Child Protection staff pictured alongside Ahmed and his family to ensure ongoing physical and mental support for Ahmed at home through regular follow up visits. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Ahmed, a 15 year-old, is lying on his bed after his leg and arm were injured during an airstrike in a market in Hudaydah. His leg is protected with Gypsum after several successful surgeries. Ali Ashwal / Save the Children The children wounded in Yemen's war Save the Children Child Protection staff pictured alongside Ahmed and his family to ensure ongoing physical and mental support for Ahmed at home through regular follow up visits. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Save the Children Child Protection staff pictured alongside Ahmed and his family to ensure ongoing physical and mental support for Ahmed at home through regular follow up visits. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Save the Children Child Protection staff pictured alongside Ahmed and his family to ensure ongoing physical and mental support for Ahmed at home through regular follow up visits. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Ahmed, a 15 year-old, is lying on his bed after his leg and arm were injured during an airstrike in a market in Hudaydah. His leg is protected with Gypsum after several successful surgeries. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Save the Children Child Protection staff pictured alongside Ahmed and his family to ensure ongoing physical and mental support for Ahmed at home through regular follow up visits. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Ahmed, a 15 year-old, is lying on his bed after his leg and arm were injured during an airstrike in a market in Hudaydah. His leg is protected with Gypsum after several successful surgeries. August 15, 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Ahmed, a 15 year-old, is lying on his bed after his leg and arm were injured during an airstrike in a market in Hudaydah. His leg is protected with Gypsum after several successful surgeries. Ali Ashwal / Save the Children The children wounded in Yemen's war Iman* is six years old and lives in Altuhaitah district, Western Hodeidah, with her parents and six siblings. Her father is a daily labourer and earns around 500 – 1000 Yemeni Riyals (1 – 2 USD) each day. On 26th June, Iman was playing in her backyard when an airstrike hit her neighbour’s house. Shrapnel from the attack reached Iman’s home and she severely injured her neck, hand, and leg. Iman’s three-month-old brother also sustained minor injuries from the shrapnel. June 07 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Iman* is six years old and lives in Altuhaitah district, Western Hodeidah, with her parents and six siblings. Her father is a daily labourer and earns around 500 – 1000 Yemeni Riyals (1 – 2 USD) each day. On 26th June, Iman was playing in her backyard when an airstrike hit her neighbour’s house. Shrapnel from the attack reached Iman’s home and she severely injured her neck, hand, and leg. Iman’s three-month-old brother also sustained minor injuries from the shrapnel. June 07 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Iman* is six years old and lives in Altuhaitah district, Western Hodeidah, with her parents and six siblings. Her father is a daily labourer and earns around 500 – 1000 Yemeni Riyals (1 – 2 USD) each day. On 26th June, Iman was playing in her backyard when an airstrike hit her neighbour’s house. Shrapnel from the attack reached Iman’s home and she severely injured her neck, hand, and leg. Iman’s three-month-old brother also sustained minor injuries from the shrapnel. June 07 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war Iman* is six years old and lives in Altuhaitah district, Western Hodeidah, with her parents and six siblings. Her father is a daily labourer and earns around 500 – 1000 Yemeni Riyals (1 – 2 USD) each day. On 26th June, Iman was playing in her backyard when an airstrike hit her neighbour’s house. Shrapnel from the attack reached Iman’s home and she severely injured her neck, hand, and leg. Iman’s three-month-old brother also sustained minor injuries from the shrapnel. June 07 2018 Ali Ashwal / Save the Children The children wounded in Yemen's war A boy injured by in the attack on a school bus in Saada, August 9th. Dozens of children aged between 6 and 14 have been killed with many more injured, after the school bus they were travelling in was hit by an airstrike in the town of Dhahyan in Saada governorate in northern Yemen. August 09, 2018 Save the Children The children wounded in Yemen's war A boy injured by in the attack on a school bus in Saada, August 9th. Dozens of children aged between 6 and 14 have been killed with many more injured, after the school bus they were travelling in was hit by an airstrike in the town of Dhahyan in Saada governorate in northern Yemen. August 09, 2018 Save the Children

A coalition spokesman did not immediately respond to a request for a comment. Saudi-owned Al Arabiya TV accused the Houthis of responsibility. The Houthis are not known to have any aerial power.

The UN warned that thousands of civilians are trapped in Hajja province, as fierce clashes between warring factions intensify.

More than 5,300 families have been forced to flee Kushar and its surrounding area the last few weeks alone.

According to the UN, clashes broke out between the Houthis and the Hajour tribesmen in late January and fighting intensified in March with the start of air strikes there.

A Yemeni girl receives treatment at a hospital in the Huthi-rebel-held capital Sanaa on March 11, 2019, from wounds sustained during a reported air strike in the Kisar district of the northern Hajjah province (AFP/Getty Images)

Hajjah's mountainous district of Kushar, 30 miles from the border with Saudi Arabia, has been hit particularly hard. Roads and all communication lines are cut and "thousands of civilians are reportedly trapped between conflicting parties", the UN said. The Houthis say their revolution is against corruption and accuse the Hajour tribesmen of accepting arms and support from Saudi Arabia.

Although both sides reached a cease-fire in the Arab nation’s main Hodeidah port in December, the Houthis still control most of the north and west.

"It is outrageous that innocent civilians continue to die needlessly in a conflict that should, and can be solved," Ms Grande added.

The ongoing conflict in Yemen has raged since 2015 when Saudi Arabia formed a coalition to fight back against Houthi rebels who took control of the capital and forced President Abdrabbuh Mansour Hadi to flee.

Tens of thousands of people have been killed and more than two million displaced in the impoverished country.