Saudi warplanes have conducted a series of air raids against Yemen’s northern province of Sa’ada, killing a woman and a young girl, residents say.

Residents said the airstrikes early on Wednesday morning killed a woman and a young girl and injured several children from the same family in the suburbs of the city of Sa’ada, according to a witness at the local hospital.

The city is a major bastion of support for the Houthi Ansarullah movement, which controls the capital Sana’a and fiercely opposes the Saudi aggression.

"There were three on our house and one on my father's house," said Helal Ahmed Saleh, one of those wounded during the aerial attack.

"When they hit mine, I was running and calling for someone to help us, but then the fourth one hit my father's house and the shrapnel hit me," he added.

Saudi Arabia has been incessantly pounding Yemen since March 2015 in an attempt to crush the popular Houthi movement and reinstate former president, Abd Rabbuh Mansur Hadi, who is a staunch ally of the Riyadh regime.

At least 13,600 people have been killed since the onset of Saudi Arabia’s campaign against Yemen. Much of the Arabian Peninsula country's infrastructure, including hospitals, schools and factories, has been reduced to rubble due to the war.

The United Nations says a record 22.2 million people are in need of food aid, including 8.4 million threatened by severe hunger.