A UN human rights official has told Al Jazeera that parts of South Sudan have been reduced to ghost towns.

Thousands have died in weeks of fighting between government forces and rebels loyal to former Vice President Riek Machar. 

The violence has forced thousands to flee, and aid workers say many of those refugees crossing into Kenya are children.

Al Jazeera's Rawya Rageh reports from the Kakuma refugee camp in Kenya.

Source: Al Jazeera