Amnesty International says violence committed by a coalition of armed groups in the Central African Republic is out of control.
It warns urgent action by the national authorities and the international community is needed to control the coalition - known as Seleka.
Seleka is accused of attacks on civilians including murders, torture, rape and forced recruitment of children.
Amnesty International's Godfrey Byaruhanga has told Zara Zaher the group came into force following the ousting of the former President.
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