One blue helmet from Burkina Faso was killed in the attack, which took place on Saturday at a base in the city of Timbuktu housing camps from the UN Multidimensional Integrated Stabilization Mission in Mali (MINUSMA) and a French military operation known as Barkhane.
Seven peacekeepers, seven French soldiers and two Malian civilians were injured.
The attackers were disguised as UN peacekeepers, according to media reports.
MINUSMA supports political processes in Mali, in addition to carrying out a number of security-related tasks, and this was the largest attack against the Mission since its deployment five years ago, and the third this month.
UN Secretary-General António Guterres has conveyed his condolences to the Government of Burkina Faso and to the family of the fallen peacekeeper.
He also wished a speedy recovery to the injured.
“The Secretary-General calls on the Malian authorities as well as the signatory armed groups to the peace agreement to spare no effort in identifying the perpetrators of this attack, so that they can be brought to justice as swiftly as possible,” said a statement issued on Sunday by his spokesperson.
The UN chief stated that attacks targeting peacekeepers may constitute war crimes under international law.
He said these acts will not deter the UN Mission’s determination to support the Malian people in their quest for peace and stability.
Mr. Guterres also paid tribute to the courage of the men and women serving in MINUSMA, as well as the Malian and international forces, who are doing so “at great personal risk and sacrifice.”
The UN Security Council has also issued a statement condemning the attack.
The 15 ambassadors expressed concern about the security situation in Mali and the terrorist threat also affecting other countries in the Sahel.
They said efforts by the Force Conjointe, a counter-terrorism brigade comprised of forces from five Sahelian countries, will contribute to creating a more secure environment in the region.