Peter Kassig

Peter Kassig (c. 1988 – c. November 16, 2014) was an American aid worker. He was the fifth Western hostage killed by Islamic State (IS). Kassig was captured near Deir Ezzour, Syria. He was on his way to deliver medical supplies and food to poor Syrians. 
On November 16, 2014, IS posted a video showing Jihadi John standing over a severed head but no beheading act. The White House confirmed the person killed was Kassig. Kassig was 26 years old.