In our news wrap Friday, the family of American hostage Kayla Mueller says she was repeatedly raped by Islamic State leader Abu Bakr al-Baghdadi before her death, according to U.S. intelligence.

US President Barack Obama on Tuesday confirmed the killing of US aid worker Kayla Jean Mueller, who was taken hostage in Syria by the Islamic State group, and vowed to track down her captors.

The search and rescue group has found the remains of three unidentified bodies so far, according to anonymous sources.

Diane Foley, the mother of slain ISIS hostage James Foley (C), stands alongside the parents of slain ISIS hostage Kayla Mueller, Carl Mueller (3rd R) and Marsha Mueller (2nd R), and family members ...