Last US Islamic State hostage Kayla Mueller confirmed dead
The US has confirmed the death of aid worker Kayla Mueller, the last American hostage known to be held by Islamic State (IS) militants in Syria.
Her family said they were “heartbroken” to learn the news, and released a letter written during her captivity.
Paying tribute to her, President Obama said “she represents what is best about America”.
Last week, Islamic State said she had died in a Jordanian air strike, without providing proof.
Ms Mueller, 26, was abducted while working in Aleppo, Syria in 2013.