ISIS leader Abu Bakr al-Baghdadi was sexually abusing American hostage Kayla Mueller, U.S. government officials tell CNN. CNN's Jim Sciutto reports.
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American hostage Kayla Mueller was repeatedly forced to have sex with Abu Bakr . ISIS Leader Abu Bakr Al-Baghdadi Sexually Abused American Hostage Kayla Mueller, Officials Say Hostage Kayla Mueller Was Raped by ISIS Leader Abu Bakr al-Baghdadi, Family Told Kayla Mueller forced to have sex with Isis leader before her ... Islamic State leader Baghdadi 'raped' Kayla Mueller.