Harrowing footage has emerged which appears to show ISIS gunmen dragging terrified wives and daughters from their families to make them sex slaves.

The video, posted online by activists, shows a crowd of screaming Yazidis being separated one by one by militants armed with AK-47s in what appears to be an apartment block.

Terrified girls try to cling to their parents but are ripped away, some by their hair, and corralled into another group at gunpoint.

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Harrowing: Shocking footage has emerged which appears to show ISIS gunmen dragging terrified wives and daughters from their families to make them sex slaves in an apartment block, possibly in Iraq

Terrified girls try to cling to their parents but are ripped away by their hair, and corralled into another group

Above them, the sinister ISIS black flag is hung from a balcony beside more jihadists, one of whom appears to be brandishing a rocket launcher.

The video, which appears to have been uploaded to Facebook by Yazidi activists, has not been independently verified and the fate of the captives is not known.

ISIS massacred as many as 5,000 Yazidi men and abducted hundreds of women and young girls, when it swept through the Iraqi town of Sinjar last year.

Brutal: Armed militants in balaclavas stand guard as fighters separated the Yazidi women one by one

Slaughtered: ISIS gunmen stormed the village of Kocho last year and massacred around 800 men, women and children (pictured above)

Some women have been lucky enough to escape or be freed, but have given horrific accounts of rape, torture and suicide.

Pregnant women have also been forced to undergo abortions leaving them unable to move or speak.

ISIS jihadists would bring their own gynaecologists to 'slave markets' where captured women who were found to be pregnant would be subjected to painful abortions so they could be used for sex.