STORY HIGHLIGHTS
- The rebels are using a former elementary school as a prison
- The warden insists conditions are far better than at government detention facilities
- In brief supervised encounters, journalists saw signs suggesting beatings
- Captured soldiers and army officers appear to be treated better than militia members
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Aleppo Province, Syria (CNN) -- In what has been one of the hottest summers many Syrians can remember, the classrooms of an elementary school in the north of the country are packed full -- not with schoolchildren, but with pro-government prisoners captured by rebels.
In one classroom this week, at least 40 adult men sat barefoot on cushions on the crowded floor in front of the teacher's chalkboard. Their heads were shaved. Most of them hid their faces as armed men showed visiting journalists the room.
"They are shabiha," said one of the armed men, referring to Syria's much-feared pro-government militia.
Months ago, Syrian rebels from the Tawheed (Unity) Brigade converted this school into a makeshift detention center that now houses at least 112 detainees. Jailers invited CNN reporters to visit the facility, provided its exact location not be identified for security reasons.

Rebel fighters load an anti-aircraft machine gun on an armored vehicle in Atareb, east of Syria's second-largest city, Aleppo, on Tuesday, July 31. Unrest spread across other volatile regions of the country as forces of President Bashar al-Assad's regime shelled targets and launched raids in and around Damascus, Homs, Daraa and Deir Ezzor.
Syrian boys run near a building hit by bullets and fire in Atareb.
A member of the Free Syrian Army fires at forces loyal to President Bashar Al-Assad in a district of Aleppo called Salah Edinne on Tuesday.
A member of the Free Syrian Army carries an injured civilian to safety in Aleppo's district of Salah Edinne on Tuesday.
Members of the Free Syrian Army learn that a tank belonging to forces loyal to President Bashar Al-Assad is heading to the area.
A Syrian boy carries bags of bread as people wait outside a bakery near Syria's second-largest city, Aleppo.
A photo released by Syrian Arab News Agency depicts damaged buildings in Homs on Monday, July 30.
A Free Syrian Army fighter takes position Sunday, July 29, in Aleppo as people flee shelling. Intense clashes have been under way for more than a week between the regime and rebels in Aleppo, Syria's commercial and cultural center.
Parts of Syria's largest city saw the fiercest clashes yet in the country's 16-month crisis on Saturday, July 28. About 200,000 people have fled fighting in Aleppo and surrounding areas in the past two days, a U.N. official says.
Fighting leaves vehicles damaged Saturday in the southwestern city of Daraa.
Syrians carry the body of a man allegedly killed in the bombardment of Sukari, southwest of Aleppo, by Syrian regime forces on July 27.
Destruction appears widespread in Homs on Friday, July 27, in a handout photo from the Syrian opposition Shaam News Network.
A Syrian opposition fighter takes aim during clashes with forces loyal to President Bashar al-Assad in Aleppo on Wednesday, July 25.
Family and friends mourn over the body of Usame Mircan, who they say was killed by a Syrian government sniper in Aleppo on Wednesday.
Usame Mircan's mother grieves after he was killed during fighting in Aleppo.
The bodies of men killed during clashes between Syrian rebel fighters and goverment forces lie on the Aleppo street on Thursday, July 26.
Fighters from the Syrian opposition rest at a former primary school in Aleppo on Wednesday.
Residents take cover as fighters from the Syrian opposition clash with forces loyal to President Bashar al-Assad in Aleppo on Wednesday.
Syrian rebels guard a checkpoint in Aleppo on Wednesday.
A damaged portrait of President Bashar al-Assad sits among piles of debris at a checkpoint manned by Syrian rebels in Aleppo on Wednesday.
Syrian rebels drive through Selehattin near Aleppo during clashes with government forces on Monday, July 23.
A Syrian rebel runs through the streets of Selehattin during an attack on a municipal building. The rebel Free Syrian Army says it is attempting to "liberate" several districts of Aleppo.
Syrian rebels work to find snipers during clashes Monday between the opposition and government forces in Selehattin.
Syrian rebels make their way down a street Monday in Selehattin near Aleppo. If they gain control of Aleppo, it would mark a pivotal point in the Syrian crisis.
Syrian rebels take cover behind sandbags during fighting Monday at the entrance to the city of Selehattin.
On Sunday, July 22, a Syrian refugee looks out from a bus as he arrives at a refugee camp in Turkey opposite the Syrian commercial crossing point Bab al-Hawa.
Syrian refugees flee from a refugee camp nicknamed "Container City" on the Turkish-Syrian border in Kilis province, southern Turkey, on Sunday.
A mortar shell falls toward the Syrian village of Jbatha Al-khashab, about 45 kilometers (28 miles) south of Damascus. It's seen from the Israeli side of the border, in the Golan Heights.
Smoke from artillery shelling rises above Jbatha Al-khashab.
An armed Syrian rebel wearing the jersey of FC Barcelona rests with comrades near the northern city of Aleppo on Sunday. The rebel Free Syrian Army announced the start of the battle to "liberate" Aleppo, Syria's commercial hub and a traditional bastion of President Bashar al-Assad's regime.
A Free Syrian Army soldier rips a portrait of President Bashar al-Assad at the Bab Al-Salam border crossing to Turkey on Sunday.
Dozens of Turkish truck drivers on Saturday, July 21, accused Free Syrian Army rebels of having burned and looted their lorries as they captured Syria's Bab al-Hawa post, near Aleppo, from government troops.
In this photo released by the Shaam News Network, a truck burns after shelling in the Erbeen suburb of Damascus on Saturday, July 21.
Refugees fleeing the violence in Syria arrive by bus in Baghdad, Iraq, on Saturday.
Turkish soldiers stand guard at the Cilvegozu border gate in Reyhanly that connects to Syria's Bab al-Hawa post. An estimated 120,000 people have fled Syria to Turkey, Iraq, Lebanon and Jordan.
Burned-out trucks at the Bab al-Hawa Syrian border post with Turkey on Friday, July 20. Syrian rebels seized control of the post after a fierce battle with Syrian troops, an AFP photographer at the scene reported.
Syrian soldiers celebrate in the al-Midan area in Damascus on Friday. Syrian regime forces routed rebel fighters from the Damascus neighbourhood of Midan, Syrian state television reported, saying troops had "cleaned" the district of "terrorists."
Journalists are shown a dead body on a government tour of the al-Midan area in Damascus on Friday.
Members of Syria security forces rest in the al-Midan area in Damascus on Friday.
Syrian army soldiers hang their national flag in a partially destroyed neighborhood in the al-Midan area in Damascus.
Smoke hangs in the air in a partially destroyed neighborhood in the al-Midan area in Damascus.
Members of Syria security forces pose for photographers in the al-Midan area in Damascus after driving out the rebel fighters.
Syrian residents take goods from a truck that rebels captured at the Bab al-Hawa border crossing with Turkey on Friday.
A picture released by the official Syrian Arab News Agency on July 19 shows Syrian General Fahd al-Freij meeting with President Bashar al-Assad in Damascus after his swearing-in ceremony as defense minister.
A man holds up a picture of President Bashar al-Assad at a former police station in Atareb after clashes between Syrian soldiers and Free Syrain Army near Aleppo on Thursday, July 19. Rebels seized control of border crossings with Iraq on Thursday, dealing a new blow to al-Assad, as China and Russia dismayed the West by blocking U.N. action against his regime.
People walk along the street in Atareb amidst damage caused by clashed between Syrian soldiers and the Free Syrian Army.
A Syrian man checks the former police station of Syrian regime after a clash at Atareb on Thursday.
Smoke ascends from from alleged shelling of the Syrian village of Jebata al-Khashab as seen from the hill village of Buqaata in the Israeli-annexed Golan Heights on Thursday.
The death toll in Syria on July 12 reached 287, making it the bloodiest day in Syria since the uprising began. As it has done consistently, Syrian state television blamed "armed terrorist groups" for the killings.
A Syrian woman sits with her grandson outside a damaged building after attacks in the Syrian village of Treimsa on July 13, 2012. More than 200 people were massacred in the town, according to activists.
A Syrian demonstrator holds an opposition flag during a protest in Damascus on July 2, 2012. There have been increasing reports of violence in the Syrian capital.
Syria's President Bashar al-Assad waves as he arrives for a speech to Syria's parliament in Damascus on June 3, 2012. The embattled president denied that government forces were behind the "outrageous" massacre in Houla.
People gather at a mass burial on May 26, 2012 for victims reportedly killed during an artillery barrage from Syrian forces in Houla. The attack left at least 108 people dead, including nearly 50 children, according to the United Nations.
Members of the Free Syrian Army return to Qusayr on May 12, 2012 after an attack on Syrian regime forces in the village of Nizareer, near the Lebanese border in Homs.
A U.N. observer speaks with Syrian rebels and civilians in the village of Azzara on May 4, 2012, days before the country's parlianemtary polls were held against a backdrop of unrest.
Thousands of Syrians wave their national flag and hold portraits of President Bashar al-Assad and Lebanon's Hezbollah chief Hassan Nasrallah, right, during a rally to show support for their leader on March 29, 2012 in Damascus.
Syrian rebel fighters man a checkpoint leading into the town of Taftanaz in the rebel stronghold province of Idlib on March 20, 2012.
A Free Syrian Army rebel mounts his steed in the Al-Shatouria village near the Turkish border in northwestern Syria on March 16, 2012, a year after the uprising began. The Free Syrian Army is an armed opposition group made up largely of military defectors.
Syrian refugees walk across a field before crossing into Turkey on March 14, 2012. International mediator Kofi Annan called for an immediate halt to the killing of civilians in Syria as he arrived in Turkey for talks on the crisis.
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Arab foreign ministers attend an emergency meeting at the Arab League headquarters in Cairo on October 16, 2011, to discuss the crisis in Syria.
U.S. Secretary of State Hillary Clinton speaks to the media in Washington on August 18, 2011. Clinton said U.S. sanctions on Syrian oil "strike at the heart of the Syrian regime."
Syrian youths wave national flags while army troops drive out of Daraa on May 5, 2011. During a week-long military lockdown of the town, dozens of people were reportedly killed in what activists described as "indiscriminate" shelling on the city.
Syrians in Damascus protest in the street on March 25, 2011, after clashes with government forces in Daraa left several dead.
Supporters of Syrian President Bashar al-Assad rally on April 1 in Istanbul, Turkey, as delegates from dozens of countries gather to push for ways to end the deadly violence in Syria. The United Nations estimates more than 10,000 people have been killed since the beginning of the crisis in March 2011. The conflict is now being labeled a civil war by the International Committee of the Red Cross.
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The prison warden, a former employee of the Agriculture Ministry who asked only to be called Abu Hatem, insisted conditions at the school are far better than at government detention facilities.
"See, the prisoners and the guards eat the same food," he said as he showed eggs, a bowl of plums, and a boiling pot full of potatoes in the prison's kitchen.
But during brief supervised encounters with prisoners, there were signs suggesting some of the captives had endured beatings and perhaps far worse during or since their capture by rebel forces.
One of the prisoners could barely see, his eyes were so swollen and purple. But it was unclear how long he had been held and whether his injuries might have been suffered in battle.
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While showing CNN the room housing suspected shabiha members, the jailers ordered another captive to approach and strip off his shirt.
The man rose and hobbled to the door, unable to stand flat on his bare feet.
He removed his shirt and revealed a complicated network of tattoos coating his chest and back suggesting he was a fanatical supporter of the Syrian government.
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The prisoner's body was decorated, quite literally, with the faces of the Syrian regime.
A portrait of former president Hafez Assad was tattooed on his chest, accompanied by smaller drawings of Assad's long-dead son Basil and another son, the current president, Bashar.
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There were two leaping lions -- Assad means "lion" in Arabic -- on the prisoner's back, as well as phrases in Arabic script declaring "Syria-Bashar al Assad," "the men of al Assad," and "Greetings Hezbollah," referring to the Shiite movement in Lebanon that is closely allied with the Damascus regime.
Even more disturbing were the dozens of fresh cuts and gashes criss-crossing the tattoo portraits of Bashar and Hafez al Assad.
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The warden insisted his men had not tortured the prisoner. Instead he offered an unlikely explanation for the painfully disfigured torso.
"He confessed to committing crimes," Abu Hatem said. "So he cut himself and wanted to donate blood to the rebels."
"He had a nest, he was in charge of a group that crushed protests. He was connected to the security forces and the intelligence agencies," Abu Hatem continued, adding that the tattooed prisoner had been captured last week by rebel fighters in Aleppo.
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The top enforcer at this rebel-run prison was a hulking man who wore a pistol in a shoulder holster over his gray galabiya, a long tunic. He asked to be identified only by his nickname, "Jumbo."
Jumbo was a former taxi driver whose only experience running a prison stemmed from a prior stint in a government detention center.
"I spent six days hanging in a bisat al-rih," or flying carpet, he said, referring to a torture device that Syrian security forces use systematically against captives, according to CNN interviews with more than a dozen former inmates and defected security officers.
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"I want to hurt (the prisoners)," Jumbo added. "But we work according to God's will. Once we capture them, we don't even want to slap them because we control them. Of course, its different during battle."
Jumbo's men brought a prisoner into the warden's office for a conversation.
The man, who asked to be called Mohammed, was barefoot, had bruises on his wrists from what may have been ropes or handcuffs. He was trembling with fear. Every time he spoke, he shot terrified glances at Jumbo.
His captors called him a member of the shabiha. Mohammed indirectly denied that accusation, saying instead that he had been a bureaucrat at a city accounting office in Aleppo until a rebel raid destroyed the building.
"After the office exploded, I needed a job and kept looking for work," Mohammed said. "I had to pay rent for my house and my wife was having a baby and needed a caesarian operation, and I was looking for money. ...The municipality told me there is a job for you. You work one day and you get the next day off. I only spent five days at the job. And they caught me at the checkpoint. I was on guard duty by the park."
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Mohammed said he was promised the equivalent of $190 a month to carry a Kalashnikov rifle for the Syrian security services.
At one point during the interview, Jumbo suggested Mohammed lift his shirt, "to show there were no signs."
"There ARE marks!" Mohammed whispered fearfully to Jumbo.
Down the hall from the suspected shabiha prisoners, rebels had established another classroom-turned-prison cell for around 40 men described as captured soldiers and army officers.
Jumbo and his men treated these prisoners with noticeably more respect than the men in the shabiha room. Several prisoners introduced themselves as majors and colonels in the army. The marker board and the chalk board in front of them were covered with quotations and excerpts from the Koran.
When asked, the warden, Abu Hatem, said observers from the International Committee of the Red Cross, as well as other journalists, would be welcome to look at his improvised facility.
"We want all the news channels around the world to report the truth, so everyone can see what has happened to the Syrian people while the rest of world just watches," Abu Hatem said. "No one is doing anything because we don't have any oil. In Libya, they instantly came with an international decision to attack Gadhafi's forces. But because we don't have oil in Syria, they left us here to deal with this mess alone."
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