The militant group has claimed the attack near Mauritania border that killed Oumar Traore, chief of staff for Colonel Assimi Goita, among several others.
Suspected militants kill at least 24 people, including civilian defence volunteers in area near Togo and Ghana borders, sources and local officials say, adding more than a dozen militants were killed in response.
Elections in Africa's most populous nation have often been marred by violence, claims of vote-rigging and logistical problems since it emerged from military rule in 1999.
The attacks come a week after militants linked to Daesh killed at least 23 people in a raid on an eastern village in the central African country.
Militants seize around 60 women, girls and babies gathering wild fruit and other food in northern Djibo region, investigators say.
The armed groups "unanimously regret the lack of political will on the part of the transitional authorities to implement the Agreement for Peace and Reconciliation in Mali."
Earlier on Tuesday, Pakistan's special forces stormed a counter-terrorism centre in a northwestern district to free several security officials who were taken hostage by a group of detained Pakistani Taliban militants.
Deadly attack in Centre-North region on auxiliary force that supports poorly equipped military leaves at least 12 people dead, local sources say.
Malian authorities say at least 100 people have been killed in several days of fighting over territory between Daesh and local Al Qaeda in the east of the country.
FM Abdoulaye Diop warns France against violating Mali's airspace and delivering arms to militants who have been fighting in the West African country for the past 10 years, accusations Paris calls "defamatory".
It was the fourth attack in Togo since last year as the West African country, Benin, Ghana and Ivory Coast all face a growing threat from militants in the Sahel, which is north of their borders.
Outlawed Balochistan Liberation Army kills Lieutenant Colonel Laeeq Baig Mirza and his friend before Pakistani army could rescue them in operation near restive border with Afghanistan and Iran, officials say.
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