The statement released today by the UN mission says the suicide attack took place in Ber in the region of Timbuktu. It marks the third time this week that UN peacekeepers have been targeted in northern Mali.
David Gressly, the UN Secretary-General's deputy special representative in Mali, condemned the attack, saying the violence only reinforces the peacekeeping mission's determination.
Three other peacekeepers have been wounded over the past week by mine explosions in northern Mali.
France led a campaign to oust al-Qaida militants and other jihadists from power in January 2013 although remnants of the groups continue to sow violence across the north.