The African Union (AU) has accused government and rebel forces in South Sudan of extreme violence since the conflict erupted at the end of 2013 .
A commission of inquiry found evidence of killings, torture, mutilations and rape, mostly against civilians, as well as episodes of forced cannibalism.
However, it specified that genocide had not been committed during the conflict.
Tensions remain, with a peace deal agreed between the government and rebels in August repeatedly broken.
Tens of thousands of people have died and another two million people have been forced from their homes since the civil war began nearly two years ago.
In its report, the AU said the commission, formed last year under the chairmanship of Nigeria’s ex-President Olusegun Obasanjo, had identified perpetrators of violence from both sides.