Two days of clashes between Opposition and tribesmen fighting alongside hard-line takfiris in northern Yemen have killed at least 23 people.

Two days of clashes between Opposition and tribesmen fighting alongside hard-line takfiris in northern Yemen have killed at least 23 people, sources said on Sunday.

Fighting has centered for months on a takfiri stronghold in Dammaj, which has been besieged by the opposition fighters known as Huthis.

But the conflict has spread in the northern provinces, embroiling tribes wary of the power of the Huthis.

On Sunday, at least 10 people were killed in Jawf province in clashes between opposition and militiamen from the Daham tribe, a tribal chief told media outlet.

Seven people were killed at Harf Sufyan, in the northern province of Amran, another tribal chief said on Sunday, while two others died in shelling of Dammaj, in Saada province, takfiri websites reported.

Four people died in fighting that took place in Jawf on Saturday, another tribal chief said.

Huthi fighters this week took over positions evacuated by takfiri gunmen in the area of Kitaf, north of Saada city, witnesses said, adding they demolished a takfiri stronghold and 20 more houses used as human shield.

Fighting between the two side is ongoing as well in Arhab, about 30 kilometers (18 miles) north of Sanaa.

President Abdrabuh Mansur Hadi dispatched on Saturday mediators to the troubled areas.