The latest attacks highlighted the vulnerability of the sprawling arid north, where UN peacekeepers and Malian soldiers are struggling in their fight against jihadists who had seized vast swathes of territory in 2012.
A camp of the UN mission in Mali, or MINUSMA, was attacked early today in the strategic town of Kidal in the northeast, a UN source said.
Two Guinean soldiers died on the spot. Two other soldiers, among seven seriously wounded, died later of their injuries, the Guinean source said.
The raid coincided with a visit to the region by the new chief of MINUSMA, Mahamat Saleh Annadif, who began touring the north on Monday.
Annadif said the raid was an "odious and irresponsible act" which highlighted the "confusion in the ranks of the enemies of peace."
Annadif was in Kidal a week after a peace pact eased tensions in the town, where the arrival early in February of members of a pro-government group had upset the former rebels in the Coordination of Movements of the Azawad.
In a separate attack, three Malian soldiers died and two others were wounded near the fabled city of Timbuktu, a Malian military source said.
"Three of our men died today between Timbuktu and Goundam when they were ambushed by jihadists," a Malian officer told AFP. "Two others were wounded but their lives are not in danger."
The defence ministry confirmed the attack, condemning what it termed a "cowardly" strike.
Yesterday, a customs officer and two civilians were killed in another Islamist strike in the northern town of Hombori, two days after three Malian soldiers died in an explosion while they were patrolling the frontier near Burkina Faso.
