At least 2,500 women and children have been imprisoned, sexually abused and sold for around $10 each by Isis slavers.
Women who were captured at the end of August managed to contact the UN, having kept hold of their mobile phones. They reported being subject to sexual assaults.
The UN study is based on claims made in 450 interviews with Iraqi witnesses to alleged war crimes.
UN high commissioner for human Rights Zeid Ra'ad al Hussein told the Daily Mail: "The array of violations and abuses perpetrated by ISIL and associated armed groups is staggering, and many of their acts may amount to war crimes or crimes against humanity."
One 13-year-old Yazidi girl gave a harrowing account of what happened to her after she was abducted by Isis from her village on 3 August.
"She stated that ISIL [Islamic State] took hundreds of women who had not been able to flee to Jabal Sinjar," stated the report. "The girl stated that she was raped several times by several ISIL fighters, before she was sold to a market."
They've also been gang raped.
One Yazidi woman was given to 10 Islamic State men. "We were sold for $10 or $12. Who could accept that behaviour? Can God accept that?" the woman told Euronews. "It's a shame to rape a woman, but when she is raped by 10 men… what is this? They are animals, they are not humans. Because of them I am afraid all the time."
They are worse than animals.
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