They are calling for the hostilities to cease immediately in order to reduce human suffering and prevent further loss of innocent lives.

The UN Office for Coordination of Humanitarian Affairs (Ocha) reported on Wednesday that more than 9,100 people were displaced following the recent surge of violence in Fashoda County.

The renewed clashes between armed youths have also resulted in civilian deaths and injuries, abductions of women and children and the destruction of properties and livelihoods, There were also reports of incidences of gender-based violence, Ocha said.

It did not provide details regarding casualties, but local media reported that countless numbers of people were killed in the renewed violence.

"The humanitarian community in South Sudan is appalled by the continuous violence that has a devastating impact on the lives and livelihoods of ordinary women, men and children – those vulnerable who are already affected by the dire humanitarian situation in the country suffer most," said Peter Van der Auweraert, the UN Acting Humanitarian Coordinator in South Sudan.