'ISIS Prison' Where Extremists Tortured Women Kept As Sex Slaves

Stained pillows lie scattered across the floor of a dark, dank concrete room. This small cell, its peeling walls covered with Arabic prayers, is believed to have been the site of untold horrors for women kept as sex slaves by ISIS militants.

The prison was discovered by rebel Syrian fighters sent to secure the northern city of Manbij after it was recaptured from the extremists last month.

A plastic dog bowl filled with ground food and liquids is seen on the floor of one room. Elsewhere, a woman's comb is placed on top of a blue satin cushion.

Thin mattresses, moulding and covered with dirt, are seen shoved in one solitary corner.

Drugs, contraceptives and sexual stimulants used by the extremists and forced upon their captives were found in the chilling facility, the fighters said.

According to Sky News, Ibrahim Al-Mohammed told Arab 24: 'We discovered an Islamic State group prison for women, with rooms for groups as well as solitary prisoners.

'We found the worst, most violent torture tools, and may God curse them.'

The city of Manbij, which lies on a key supply route between the Turkish border and the ISIS stronghold of Raqqa, was first captured by the extremists in January 2014.

Thousands of civilians were freed when the city was liberated by SDF forces on August 12 following a major offensive.

SDF troops later reported that ISIS fighters had planted some 13,000 mines throughout the city.