Mali's President Ibrahim Boubacar Keita on Saturday said his people would not be frightened by "barbaric attacks" after unidentified gunmen killed at least 14 soldiers in an assault on a military camp.
West Africa's arid Sahel region is suffering a spike in violence by militant groups, some with links to al-Qaida and Islamic State, that is drawing an increasingly aggressive response from countries including France and the United States.
The military camp in Soumpi, in the center of the country near the southern boundary of Mali's Timbuktu region, came under attack before dawn. There was no immediate claim of responsibility for the attack.
"The provisional toll is 14 dead, 17 wounded and two enemies killed. The search is still on for those missing," one source said. A second source said "around 15" soldiers had been killed. "The soldiers abandoned their position. The enemy carried away material," he said.
Both sources asked not to be named because they were not authorized to speak to reporters.
Islamist fighters seized control of Mali's northern desert regions in 2012 before being driven back by a French-led intervention a year later.
But despite the presence of a U.N. peacekeeping mission and troops operating under a regional French anti-militant mission, violence is again on the rise and attacks are spreading further south toward the capital, Bamako.
"These barbaric attacks will not scare us. On the contrary, they reinforce our determination to fight against the terrorists," Keita said, speaking in the central Mali village of Boni, where 26 people were killed Thursday.
Those victims were traveling from neighboring Burkina Faso in a civilian passenger vehicle when it struck a land mine.
In a separate incident on the same day in the nearby town of Youwarou, the Malian military said its forces repelled an attack by suspected Islamist fighters.
Mali and its western neighbor Senegal plan to deploy 1,000 troops soon in an operation to pacify central Mali and contain jihadists who had previously been confined to its Saharan expanses in the north.
But analysts doubt they will be able to do so purely through military means. The Islamists exploit the grievances of Fulani cattle herders and their disputes with local farmers over access to grazing lands.
The government's periodic crackdowns on suspected jihadists have therefore tended to target the Fulani, driving some of them into the arms of the armed groups.