Editor's Note: EXTREME CAUTION ADVISED: The videos linked and embedded in this story are extremely graphic, showing brutal executions, and the bodies of those killed in those executions.

After exposing videos of "ritual human sacrifices" of Christians by Muslims, a former Palestinian Liberation Organization member-turned-Christian has discovered a new set of shocking videos that show human slaughterhouses in which non-Muslims are executed.

The videos, posted by Walid Shoebat, and his son, Theodore Shoebat, are horrific, showing heads neatly lined up against a wall and bodies suspended by their feet in a room.

Also shown is the testimony of a witness who was threatened with being "sacrificed."

"I have never seen something like this," Shoebat told WND. "I have been investigating this story for the past two weeks. The story is probably the most horrific I have ever [done]. It proves with footage actual systematic [sl]aughterhouses of human beings, including Christians in Syria."

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The witness video, translated by Shoebat's organization, Rescue Christians, includes the testimony of Saif Al-Adlubi, who inexplicably was identified for "sacrifice" but then not killed before government soldiers arrived.

"This is the reality of Islam, it is a pagan and utterly depraved and sadistic religion. It takes the soul of a man and purges any remnants of human affection from his very being. Look to your own soul, and understand your own obligation to help the Christians," Shoebat said.

Al-Adlubi reported witnessing Armenians who were waiting their turn to be slaughtered.

An "Egyptian butcher ... grabbed the neck of one elderly Armenian Christian," Al-Adlubi said.

He said the executioner then said, "You're an aged man and your neck is soft and I don't have to sharpen my knife for you."

The report blames the "gruesome systematic human extermination centers" of the Islamic State of Iraq and the Levant, or ISIS, a radical Islamic organization in Syria and the Middle East.

Al-Adlubi is described in the report as a Muslim fundamentalist who joined the Free Syrian Army and was a militant and a media agent for FSA. He was captured but later "made it out when the Syrian militia" defeated the rebels in that location.

Al-Adlubi said he was called a heathen, "kafir," and he responded, "How could I be considered kafir if I pray and fast?"

"You are 'murtad' (apostate)," he was told.

"I asked him, what is my destiny. I want to get a closure. What is it, a year two years in prison?" Al-Adlubi said.

He said he was told, "Rejoice, you will be sacrificed."

Al-Adlubi reported seeing "bodies of young men who were systematically slaughtered and disemboweled."

"The slaughterhouse was on a hill. It is secluded and is void of any homes nearby," he said. "I witnessed lifeless bodies hanging upside down as if they were slaughtered sheep. In the center of the slaughterhouse is a huge Egyptian about two meters high. He was the one doing the slaughtering."

Editor's Note: EXTREME CAUTION ADVISED: The videos linked and embedded in this story are extremely graphic, showing brutal executions, and the bodies of those killed in those executions.

The interview:

Shoebat said several Arabic language news sources, Alwatan, AlJazeera and Mufaker, corroborated some of the details.

Reported Shoebat: "The prison centers where the ISIS (Da'ish) controls have become miniatures of what was during the Nazi SS extermination camps, except the ISIS carries out the extermination in a much more horrific way. Da'ish transforms the prisons into kangaroo courts with systematic slaughterhouses and killing centers to exterminate Christians and Muslims who disagree with the Takfiri ideology. Once they are found guilty, the way they deal with the victims was as if they were cattle."

He said a Syrian Christian named Kamil Toume also confirmed the reports, with video, purportedly of the Siba district slaughterhouse in Homs, Syria.

Editor's Note: EXTREME CAUTION ADVISED: The videos linked and embedded in this story are extremely graphic, showing brutal executions, and the bodies of those killed in those executions.

In an interview, Toume brought additional information, Shoebat reported.

"You never heard of Umm Muhammad slaughterhouse?" Toume asked.

Additional footage shows two slaughterhouses, one in Bayyada and the other, from several years ago, in Al-Siba.

Al-Adlubi said the victims included Armenian and Syrian Christians along with Shiite and Sunni Muslims.

Said Walid Shoebat: "The stories told by Al-Adlubi and Toume add up. Toume sent us some footage that circulated the Syrian community after the human slaughterhouse finally ended, and the ugly remaining evidence was revealed when Umm Muhammad's slaughterhouse in the Siba' district in Homs was busted by Syrian police three years ago in August 2011."

Shoebat said Al-Adlubi's story "also checks out from footage obtained from Al-Bayyada, another slaughterhouse, which Rescue Christians was able to obtain footage from."

"And just as Al-Adlubi stated, they were hanging upside down, headless, like slaughtered sheep. The heads were removed from the root of the chest cavity just as Al-Adlubi stated when describing how the Egyptian was doing his meticulous methods and how Toume described the Umm-Muhammad slaughterhouse in Al-Siba' district."

Video from the Al-Bayyada slaughterhouse:

Editor's Note: EXTREME CAUTION ADVISED: The videos linked and embedded in this story are extremely graphic, showing brutal executions, and the bodies of those killed in those executions.

"We report this story because of the silence on the systematic killing of Christians, Shiite minorities and even Sunni Muslims in Syria who disagree with the Takfirist theology. The story is reminiscent to the initial reporting on the extermination of European Jewry and other minorities when little coverage was given to the truth in these days," Shoebat said.

WND reported last week Shoebat had uncovered videos showing Muslims conducting "ritual human sacrifices" by slitting the throats of their victims or putting a bullet in their heads.

Shoebat noted the speaker in one video uses the term Qurban just before gunfire erupts and men lined up in a row fall to the floor one by one. Shoebat explained that the Arabic term "can only signify a sacrifice, which indicates that the filmed slaughter is nothing but a ritual human sacrifice."

Another video shows the throat of the "sacrifice" being slit with a knife.

"Christians are being killed in these very rituals every day, and the bloodshed will not stop. We must work together to rescue them," Shoebat said.

Shoebat describes himself as a former "radicalized Muslim willing to die for the cause of jihad."

According to his biography, he arrived in the United States in 1978 to study in Chicago where he was recruited at a "terror conference" by Jamal Said, the founder of the Islamic Association of Palestine, a front group for Hamas that later launched the Washington, D.C.-based Council on American-Islamic Relations.

Shoebat said he converted to Christianity in 1994. He now is raising funds to assist Middle East Christians through a foundation he created called RescueChristians.org.

WND recently reported that Sister Hatune Dogan claimed members of the jihadist factions in Syria trying to oust President Bashar al-Assad are draining the blood of Christians they behead and selling vials to Islamic radicals for $100,000 apiece.

The Christians, she said, are beheaded in ceremonies in which they are forced to kneel, with their hands and feet bound as the Muslim radicals read a death sentence imposed because the victim refuses to renounce Christianity and embrace Islam.

WND also has reported that the ISIS, considered to be the most ruthless of the Sunni Islamic militant groups fighting in Syria, has ordered a Christian community in Raqqa, Syria, to pay nearly 38 pounds of gold as a "guarantee of their safety." The alternative offered was death.

The videos discovered by Shoebat are graphic.

Editor's Note: EXTREME CAUTION ADVISED.The following videos show brutal executions.



A row of men:

An individual:

See Sister Hatune's presentation of her findings: