More than 100 females were raped and then burned as a prison was broken in the Congolese city of Guma, according to the United Nations.
The prisoners' fans erupted from the Monsinzi prison last Monday, after fighters from the M23 rebel group began controlling the city.
Between 165 and 167 women were assaulted by male prisoners during the prison break, says an internal document of the United Nations that the BBC saw.
The report states that most women were killed after prisoners set fire to prison.
The BBC was unable to verify the reports.
Goma, a major city of more than a million people, was arrested after Rwanda -backed M23 has rapidly made progress across the eastern Congo.
The city was immersed in chaos, as it is said that the bodies in the streets and missiles fly over residential houses.
Footage of the jailbreak last week showed people fleeing the building while smoke rose in the background. Heavy fire can also be heard.
in A separate video clip, it is believed that people are the prisoners who fledIt was presented in the streets of Juma.
The government of Dr. Kongo said that more than 2000 people were killed as M23 clashed with the Congolese forces and their allies.
The United Nations says at least 900 people were killed and nearly 3,000 were wounded. It was not clear why the United Nations death fees and the doctor differed.
Earlier this week, the rebels announced a ceasefire on humanitarian lands, but there were reports of the renewal of the fighting on Wednesday.
