A child was killed and four injured, including three women, when a huge fire broke out at a camp for internally displaced people (IDP) in northern Yemen.

The blaze started at Al Jufaina camp in western Marib province on Saturday, according to Dr Khalid Musaed, manager of Yemen's IDPs executive unit.

"The cause of the fire is still unclear", Dr Musaed told The National, adding that his administration is still investigating the incident.

Twenty-five residences in the camp were burned down and ten others partially damaged.

Families whose residences were damaged or destroyed have been evacuated and hosted in a public school near the camp.

Al Jufainah is the biggest IDP camp in northern Yemen's Marib province and hosts 10,300 families. Houthi rebels have repeatedly targeted IDP camps in the province with dozens of projectiles in recent weeks.

On Saturday evening, a ballistic missile fired by Houthi rebels rocked the residential neighbourhood of Al Rawdah in the city of Marib, eyewitnesses told The National.

Four families resided in the building when it was struck by the blast, a resident said.

A child was killed and four occupants were seriously injured. Three were transferred to the intensive care unit in the city's main public hospital.

On March 29, a man and six women were injured after Houthi mortars were fired at the Al Mail IDP camp.

The recent shelling follows comments made by Houthi officials against the camps, which host over a million people.

Last week, Houthi spokesperson Mohammed Abdul Salam wrote on Twitter that pro-government forces and ISIS militants were using IDPs camps as hideouts and families residing in them as human shields.

The tweet was widely understood to be a green light for rebel fighters to target them.

"The statement made by the Houthi spokesman was a direct order against the IDPs in Marib. The tweet reflects the Houthi intention to attack the IDPs camps", Dr Musaed said.

"We strongly condemn all crimes committed by the Houthi rebels against the IDPs in Marib and call on the UN and the international community to hold them accountable for such horrible crimes which amount to war crimes", he added.