beheading-idUSKCN0J008W20141116
Islamic State militants said in a video on Sunday they had beheaded U.S. hostage Peter Kassig and warned the United States they would kill other U.S. citizens "on your streets".
The announcement of Kassig's death, in what would be the fifth such killing of a Western captive by the group, formed part of a 15-minute video posted online in which Islamic State showed the beheadings of at least 14 men it said were pilots and officers loyal to Syrian President Bashar al-Assad.
In Washington, President Barack Obama's National Security Council (NSC) said the U.S. government was working to confirm the authenticity of the claim.
"If confirmed, we are appalled by the brutal murder of an innocent American aid worker and we express our deepest condolences to his family and friends," NSC spokeswoman Bernadette Meehan said in a statement.
The man in the video spoke with the same southern British accent as the killer of previous hostages, dubbed "Jihadi John" by British media. He was believed to have been wounded in an air attack on a meeting of IS leaders in an Iraqi town close to the Syrian border earlier this month, some media reports have said.
"To Obama, the dog of Rome, today we are slaughtering the soldiers of Bashar and tomorrow we will be slaughtering your soldiers," a masked militant says, predicting Washington would send more troops to the region to fight Islamic State.
"And with Allah's permission ... the Islamic State will soon ... begin to slaughter your people in your streets."
The man in the video spoke with the same southern British accent as the killer of previous hostages, dubbed "Jihadi John" by British media. He was believed to have been wounded in an air attack on a meeting of IS leaders in an Iraqi town close to the Syrian border earlier this month, some media reports have said.