Misrata, Libya (CNN) -- On the front lines of Libya's war, rebel fighters say they are finding more than weapons on captured or killed soldiers loyal to ruler Moammar Gadhafi.

Rebels say they have confiscated cell phones that contain video showing Gadhafi loyalists raping women and torturing people.

CNN has obtained a copy of a video shot on a cell phone that appears to show a woman being sexually abused. The person who gave the video to CNN says it was on a cell phone that was confiscated from a Gadhafi loyalist.

It shows two men in civilian clothes standing over a naked woman who is bent over with her face on the floor.

The man standing behind her is sodomizing her with what appears to be a broomstick. "I can't bear it! I can't bear it!" the woman cries.

"Let's push it farther," a male voice says off-camera.

"No, no, that's enough!" the woman begs.

Eventually, one of the men puts his sock-covered foot on her face. In Arab culture, that is considered a major insult. But in this case, it pales in comparison to what the victim is already enduring.

Arabic speakers who listened to the video at CNN's request say the voices have Tripoli accents. There is no date on the video and the men in it are not wearing military uniforms.

CNN has been unable to verify the video's authenticity, when it was shot, or by whom. The person who gave it to CNN asked not to be identified for fear of being punished by Libya's conservative society.

The Gadhafi government did not respond to CNN requests for comment on the allegations of abuse.

But officials have said in response to similar accusations in the past that the government has not been able to verify the claims and would "welcome" a fact-finding mission.

"We were able to confirm that rape was used as a weapon of war because it was systematic," rebel spokesman Abdullah al-Kabeir said.

The rebels have many videos showing other types of torture, and a few depict rape, he said. He did not know exactly how many videos there were showing abuse.

One of the most famous faces of Libya's revolution, Eman al-Obeidy, dramatically claimed in March she had been gang-raped by pro-Gadhafi forces. She has since fled the country.

A Libyan psychologist who has conducted an investigation of her own says al-Obeidy's case is not unique.

Siham Sergewa says she has evidence of hundreds of cases of rape by pro-Gadhafi troops.

She began her investigation after receiving phone calls from women who said they had been sexually assaulted. Her survey of 50,000 people in refugee camps turned up 259 people who said they had been raped, she said last month.

"They tie up my husband, they rape me in front of my husband and then they kill my husband," Sergewa said one woman told her.

"I'm a psychologist and I've seen lots of things, really. But sometimes after I leave some of these families I just sit in my car and cry because it's really so painful," she said.

She has compiled a number of distressing images that she says demonstrate the abuse of alleged victims. One appears to show a cigarette burn on a woman's breast, another a faded bite mark, while several others show the deep purple hue of nasty bruises.

Sergewa shared her research, complete with pictures and recordings, with the International Criminal Court at The Hague, Netherlands, where prosecutors are currently investigating accusations that the Gadhafi regime has used rape as a tool of war.

The court did not immediately respond to CNN questions Thursday about whether it had the rape and torture videos the rebels claim to have, or whether it was seeking copies.

But the court's chief prosecutor, Luis Moreno-Ocampo, told CNN in May that the court has information about women who were stopped at checkpoints and, because they were carrying the flag of the rebels, were taken by police and gang raped.

Moreno-Ocampo has said the allegations are credible. An investigation is under way.

Rebel spokesman al-Kabeir, however, said some of the evidence of war crimes that prosecutors want to present in court has been destroyed by a rebel leader.

"There was a commander here at the eastern front in Misrata named Mohamed al-Halboos; he ordered all the (rebel) fighters to give him all the rape videos they find on Gadhafi soldiers' cell phones. I heard that he used to destroy every rape video he got," al-Kabeir said.

Asked why potential evidence of war crimes being carried out by pro-Gadhafi forces would be destroyed by rebel forces, he cited the heavy stigma that Libyan culture attaches to the victims of such crimes.

"Aside from being a heinous crime, rape is perceived here in our culture as damaging not only for the girl, but also the whole family," he said.

In fact, he added, rape is such a taboo here that some victims' families would rather erase potential evidence than risk living with the shame.

CNN's Amir Ahmed contributed to this story.