According to reports, ISIS has released a video of the beheading of American journalist Steve Sotloff.
When ISIS beheaded freelance journalist James Foley in August, the militants warned that Sotloff would be next if America did not stop its airstrikes against the extremist group.
Unfortunately, and despite his mother's powerful plea for ISIS to show mercy, the group appears to have lived up to this promise.
It is apparent that Sotloff was an individual with tremendous courage and integrity, and many have taken to Twitter to express their respect for the fearless journalist.
The story is still developing, but President Obama will probably be under even more pressure to act swiftly and without mercy.
Our thoughts are with Sotloff's family and loved ones in the wake of this tragic and deeply disturbing news.
BREAKING: Internet video purports to show beheading of US reporter Steven Sotloff by Islamic State group. — The Associated Press (@AP) September 2, 2014
American journalist Steven Sotloff allegedly beheaded by ISIS http://t.co/GrDxhiO722 — HuffPost Politics (@HuffPostPol) September 2, 2014
In video, #ISIS claims to execute second US citizen, Steve Sotloff. Same British fighter threatens British citizen, David Haines. #Syria — Jon Williams (@WilliamsJon) September 2, 2014
British #ISIS fighter warns Obama "as your missiles continue to strike our people, our knife will continue to strike necks of your people" — Jon Williams (@WilliamsJon) September 2, 2014
Please don't watch, don't share, don't delight ISIS at the expense of Steven Sotloff's friends & family. — Mitch Potter (@MPwrites) September 2, 2014
Only message you'd hear right now if I were President: "ISIS, you don't mess with American journalists. And you're about to find out why." — Jedediah Bila (@JedediahBila) September 2, 2014
OK, objectively speaking, I hate ISIS — Jonathan Weisman (@jonathanweisman) September 2, 2014
All that class division speechifying by Biden and Obama this weekend seems so trite in the face of the brutality of ISIS. #Leadership — SalenaZito (@SalenaZitoTrib) September 2, 2014
White House press secretary on Sotloff video: “I am not in position to confirm the authenticity of that video or those reports" - @c_good — ABC News (@ABC) September 2, 2014
Remember Steven Sotloff as hero for reporting #Syria atrocities. Latest is ISIS murdering him. http://t.co/7f6OwDoubH pic.twitter.com/XpDGMPVxjx — Kenneth Roth (@KenRoth) September 2, 2014
RIP Steve Sotloff. You were one of the good guys. — Blake Hounshell (@blakehounshell) September 2, 2014
Sotloff's mother last week: "He is an honorable man and has always tried to help the weak." I choose to remember this, instead of the video. — Matt Pearce (@mattdpearce) September 2, 2014