Thirty-five Malian soldiers were killed in a militant attack on a military position in northern Mali on Friday, the army said, cautioning that the death toll was provisional.

The attack deals another blow to the West African country's military, which is still reeling from deadly jihadist raids in late September that underscored the increasing reach and sophistication of armed groups operating in the region.

"The provisional toll has increased to 35 killed on the side of the Malian armed forces," the army said in a post on its Facebook page.

From their stronghold in Mali, groups with al-Qaeda and ISIL links have been able to fan out across the Sahel, destabilizing parts of Niger and Burkina Faso.

Thirty-eight Malian soldiers were killed on September 30 in coordinated attacks on two army bases in central Mali, which has slipped from government control despite the presence of the French army and other international forces.