The UN says more than 150 female sexual violence and rape victims in South Sudan have come forward in the past 12 years to seek help.
A joint statement by the Head of UN’s Children Agency UNICEF, Henrietta Fore, UN Aid Chief, Mark Lowcock and the Director of the UN Population Fund, Natalia Kanem, said armed men, many in uniform, carried out the attacks near the northern city of Bentiu.
The three agencies condemned the abhorrent attacks and called on the South Sudanese authorities to ensure the perpetrators face justice.
Doctors Without Borders last week said 125 women and girls had been raped while walking to emergency food distribution centres set up by international aid agencies.
UN Secretary General Antonio Guterres has condemned the attacks.