“This morning at Gourma-Rharous we pushed back a terrorist attack which caused 10 deaths in our ranks,” the source said.
Another military source confirmed the ambush, saying it had targeted a unit of the National Guard based in Gourma-Rharous and left around 10 men dead.
The second source said the attackers were believed to be “jihadist elements” linked to Islamist group Ansar Dine.
The attack comes two days after two Malian soldiers were killed and four others injured in an ambush in the centre of the west African country.
Jihadist attacks have long been concentrated in Mali’s north but began spreading at the beginning of the year to the centre of the country and, in June, to the south, near the borders with Ivory Coast and Burkina Faso.
The north came under the control of Ansar Dine — which is Arabic for Defenders of Faith — and two other jihadist groups, Al-Qaeda in the Islamic Maghreb and the Movement for Oneness and Jihad in West Africa, in April 2012.
A move south towards the capital by the extremists, who imposed a brutal version of sharia on inhabitants, prompted Mali’s former colonial master France to intervene in January 2013, pounding their positions in the north.