Proof of torture -- that's what Human Rights Watch says they've uncovered in Sryia. Researcher Lama Fakih says they've found everything from written accounts of abuse to actual torture devices, in the rebel held city of Raqqa.

SOUNDBITE: Human Rights Watch researcher, Lama Fakih saying:

"We were able to see, for example, documentary evidence of the types of cases that the intelligence forces were following. We were able to see the solitary confinement cells where the detainees were held. We were also able to see interrogation rooms and torture rooms."

Most of the material was found inside former security and military intelligence facilities.

SOUNDBITE: Human Rights Watch researcher, Lama Fakih saying:

"In one case, in the State Security branch, we were able to see a basat el-reeh torture device. This device is a wooden board that is in the shape of a cross that a detainee is bound to. It folds in half and enables the guards and interrogators to bind to d