"A video has emerged apparently showing Islamic State fighters discussing a 'slave market day' during which they can purchase captive girls from the Yazidi religious minority group, paying more for those who have green or blue eyes.
"The poor quality footage, which was posted to YouTube with English subtitles at the beginning of the month by Arabic satellite channel Al Aan TV, shows a crowded room of armed men sitting in chairs. In the background Islamic State flags can be seen hanging on the walls.
"As the cameraman moves around the room, the men jubilantly declare that it is a "slave market day" and that they intend to purchase Yazidi girls.
"'Today is the slave market day,' one of the men says to the camera. 'Today is the day where this verse applies: "Except with their wives and the (captives) whom their right hands possess, for (then) they are not to be blamed" '.
"'Whoever wants to sell his slave, whoever wants to give his slave as a present... Everyone is free to do what he wants with his share,' he later adds.
"'Today is the day of (female) slaves and we should have our share,' says another. 'Where is my Yazidi girl? Where is my Yazidi girl?'"