Kayla Mueller was a 26-year-old aid worker from Prescott, Arizona. She was not a thrill-seeker. She was the kind of person drawn toward suffering with a medical bag and a stubborn belief that people ...

ISIS had said on Friday, February 6, that 26-year-old Kayla Mueller had been killed in an airstrike by Jordan against the sect. ISIS had said on Friday, February 6, that 26-year-old Mueller had been ...

Friends and family of slain ISIS hostage Kayla Mueller memorialized her at a tearful news conference in her Arizona hometown on Tuesday, just hours after her family released a statement saying the ...

ISIS said in February that Mueller, of Prescott, Arizona, was killed when Jordanian fighter jets bombed a building where she was being held outside Raqqa, a stronghold in Syria of the Islamist ...

EXCLUSIVE: The parents of slain American aid worker Kayla Mueller, Carl and Marsha Mueller, have written an emotional open letter to President Donald Trump, asking him to use his upcoming meeting with ...