South Sudan: 'Indiscriminate killing' in Bor
24 February 2014 Last updated at 09:07 GMT
Human rights abuses have been committed by both sides in the South Sudan conflict, according to a UN report that cites mass killings, rape and the targeting of civilians along ethnic lines.
In Bor, whose Dinka tribe-dominated population has been caught up in the conflict, hundreds of bodies lie in mass graves, while many of those who remain flee the country.
George Alagiah reports from Bor.