The Islamic militant group ISIS beheaded Steven Joel Sotloff, an American freelance journalist who was abducted a year ago in Syria, in a video that surfaced Tuesday, a jihadist monitoring organization said.
The monitoring organization, SITE Intel Group, made the announcement on Twitter. It said that ISIS had also threatened to execute a British captive, David Cawthorne Haines.
Last week, Sotloff's mother, Shirley, pleaded directly with the leader of ISIS to spare her son.
"We have not seen Steven for over a year, and we miss him very much," she said in a video message to the ISIS leader, Abu Bakr al-Baghdadi. "We want to see him home safe and sound and to hug him."