A United Nations official says Mali's peace accord monitoring committee is demanding the immediate evacuation of government-allied militia members from a town they took from separatists in the country's north.

GATIA militia members chased Tuareg separatists from north Mali's Anefis on Aug. 17. Fighting between the groups broke a peace accord signed in June by the government, allied militias and separatist groups.

Arnauld Akodjenou of the U.N. mission in Mali said Thursday the committee condemned the violence and ordered the evacuation. He said the U.N. will investigate the fighting from Aug. 15-17.

He said the militia members are blocking the peace process.