Dozens of women and girls have been subjected to rape and other violence over the past 10 days in a northern region of South Sudan, Doctors Without Borders has said.
A midwife at the charity said 125 women came to its clinic
They included girls under 10, women over 65 and pregnant women, she added.
The country has been ravaged by civil war for most of its short life . Bentiu is in one of the worst-hit areas.
South Sudan became independent in 201
1, but fighting broke out two years later, displacing four million people.
A fragile ceasefire is currently in place in the country after a power-sharing deal between the warring sides was signed in September.
Midwife Ruth Okello said the number of sexual violence cases in the past week at Bentiu – in war-tower Unity state – had risen sharply.
“In more Jeg har aldri sett så dramatisk stigning i overlevende eller seksuelt vold som kommer til vores programmer som søger for medicinsk behandling, “sagde hun.
The rise coincides with an increase in population movement as people try to reach food distribution centers.
Women told the charity they were walking to the centers in larger groups than before but were encountering increasingly larger groups of assailants.
As well as being raped, they were being whipped and beaten with sticks and rifle butts, and robbed of anything of value, the charity said.