Fighting is increasing in Upper Nile and Jonglei regions, forcing big numbers of people to Aburoc village, says the head of UN Mission in South Sudan or UNMISS.
David Shearer expresses concerns on the difficult conditions IDPs face including lack of food and water.
There about 40 thousand people and UNMISS has flown peacekeeping force to the area, the Special Representative told the press on Thursday in Juba.
Shearer says UNMISS is supporting the government to bring peace in Pibor and Bor where there is deteriorating security situation.
UNMISS base in Leer area had been under attack for one hour last week and investigation still ongoing, the UNMISS chiefs discloses.
About 40 people died and 17 injured in the last week attack on Juba-Bor road, Shearer notes.