Kayla Mueller, the American aid worker who died while being held captive by ISIS, was repeatedly raped by the terror group's leader in Syria, her family confirmed Friday, according to NBC News.
U.S. officials told the family in June of the assaults by ISIS leader Abu Bakr al-Baghdadi, a representative of Mueller's family told NBC News.
The assaults took place at a home where Mueller was being held along with girls from an Iraqi religious minority group who were also sexually abused, The Associated Press reported.
One of those girls, 14, escaped in October 2014 and after returning to Iraq told U.S. officials that the al-Baghdadi frequently visited the house and took Mueller as his "wife."
Mueller, a 26-year-old from Prescott, Arizona, was taken hostage with her boyfriend in August 2013 after leaving a Doctors Without Borders hospital in Aleppo, Syria.
The parents' account was first reported by the Independent newspaper of London.