Islamic State video reportedly shows beheading of Steven Sotloff

WATCH: The Islamic State has executed another U.S. journalist and posted the horrific video of the killing online. Eric Sorensen has the story.

WARNING: This story contains graphic details that may not be suitable for all readers.

The Islamic State (IS) has purportedly beheaded U.S. journalist Steven Sotloff, the second execution of an American journalist in the past two weeks.

Sotloff’s life was threatened in the same video released in August in which freelance journalist James Foley was beheaded by an IS militant.

SITE Intelligence Group — a Jihadist threat-monitoring service — reported the new video’s existence on Tuesday.

Global News has seen the video and determined it to be consistent with the earlier video depicting Foley’s execution. Global News has chosen not to post the entire video online or provide a link to

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Similar to the Foley video, Sotloff is seen kneeling in front of a knife-wielding IS militant while delivering a message condemning the U.S. bombardment of IS targets in Iraq.

“I am Steven Joel Sotloff. I’m sure you know exactly who I am by now and why I’m appearing before you, and now it is time for my message.

“[U.S. President Barack] Obama, your foreign policy of intervention in Iraq was supposed to be for the preservation of American lives and interests. So, why is it that I’m having to pay the price for your interference with my life? Am I not an American citizen?”

The message criticizes Obama for spending “billions of U.S. taxpayers’ dollars” and the loss of “thousands of our troops” in the U.S. wars in Iraq and Afghanistan—which both began under the administration of former U.S. President George W. Bush — and the president’s failure to live up to his election promise to close the prison at Guantanamo Bay.

The message Sotloff delivered then accuses Obama of “deceivingly marching… the American people into a blazing fire” by taking on IS.

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Obama, in the past month, authorized more than 100 airstrikes against the IS in Iraq.

READ MORE: James Foley — Risking life to make sure conflicts don’t go unreported

The IS militant seen and heard in the video suggests he is the same executioner seen in the video of Foley’s murder.

“I’m back Obama, and I’m back because of your foreign policy towards the Islamic State, because of your insistence in continuing your bombings and armed (inaudible) of the Mosul dam, despite our serious warnings,” the militant said, speaking with a British accent.

“You, Obama, have yet again, for your actions, killed yet another American citizen. So just as your missiles continue to strike our people, our knife will continue to strike necks of your people.”

The veiled man seen beheading Foley, in the video uploaded to YouTube and other sites on Aug. 19, also spoke with a British accent, prompting an investigation into the murderer’s identity.

British media reports suggested the killer is possibly a 23-year-old British rap musician named Abdel-Majed Abdel Barry.

READ MORE: Is James Foley’s killer a British rapper-turned-jihadist?

Officials believe as many as 500 U.K. passport holders have left home to fight with extremist organizations, such as IS, in Syria and Iraq.

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Following images of Sotloff’s decapitation, a British captive identified as David Cawthorne Haines is seen kneeling before the executioner — similar to how Sotloff was displayed in the video warning he may be killed.

WATCH: White House press secretary informed of reported beheading during press briefing

The U.S government has yet to confirm the authenticity of the video of Sotloff’s apparent murder.

U.S. State Department spokesperson Jen Psaki told reporters Tuesday afternoon the U.S. government has not confirmed the authenticity of the purported video.

“The intelligence community will work as quickly as possible to determine its authenticity,” Psaki said at a media briefing. She did not know if an investigation into the authenticity of the video has begun.

She said the administration’s “hearts go out to the Sotloff family.”

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WATCH: U.S. State Department spokesman Jen Psaki on the reported second execution of an American journalist by IS.

According to The Associated Press, the freelance journalist’s family is aware of the video and are grieving.

Sotloff’s mother, Shirley Sotloff, made a video plea last week asking IS leader Abu Bakr al-Baghdadi to spare her son’s life.

“As a mother, I ask your justice to be merciful and not punish my son for matters he has no control over. I ask you to use your authority to spare his life and to follow the example set by the Prophet Muhammad, who protected People of the Book. I want what every mother wants, to live to see her children’s children, I plead with you to grant me this.”

Sotloff disappeared in Syria in August 2013, while covering the civil war in the country.

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Sotloff was seen in the video IS uploaded Aug. 19 showing the beheading of 40-year-old Foley, who had been held hostage since Nov. 2012.

The militant group demanded a $132-million ransom for Foley’s release, among other conditions.

READ MORE: Why ransoms are big business for terrorists and why the U.S. won’t pay

In the same video, Sotloff was seen kneeling in front of an IS militant, who said, “The life of this American citizen, Obama, depends on your next decision.”

The Committee to Protect Journalists condemned reports of Sotloff’s murder, saying journalists like he and Foley are “not representatives of any government.”

“Journalists know that covering war is inherently dangerous and that they could get killed in crossfire. But being butchered in front of [a] camera simply for being a reporter is pure barbarism,” CPJ Executive Director Joel Simon said in a statement, noting at least 70 journalists have been killed covering the civil war in Syria and that at least 20 others are currently missing in the country.

READ MORE: The work of James Foley and other journalists killed in 2014

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