The U.N. peacekeeping mission in Ivory Coast, known by its French initials UNOCI, said it stood in support of a national disarmament, demobilization and reintegration campaign meant to restore nationwide security in a country divided by civil conflict in 2002.
The mission said at least one person was killed and three others were wounded when the brigade's convoy came under attack early this week by gunmen in the northwest.
UNOCI said the brigade's director general was travelling in the convoy but escaped injury. The mission said it was calling for swift justice nonetheless.
In a statement published Tuesday, UNOCI said it was calling "on the competent Ivorian authorities to take all measures to identify the authors of the attack and bring them before the law."
Presidential elections in Ivory Coast in 2010 were meant to unite a country divided by war. Rival claims to victory, however, pushed the country to the brink of civil war.
Human Rights Watch said in a Monday report extortion was common among security forces operating in western Ivory Coast near the eastern border with Liberia.