Iraq crisis: Iraq grannies 'take on IS in Amerli’
1 September 2014 Last updated at 22:52 BST
The UN Human Rights Council has agreed to send an emergency mission to Iraq to investigate violations committed by Islamic State.
The UN says it has received reports from Iraq that "reveal acts of inhumanity on an unimaginable scale".
The allegations came as a BBC team entered the town of Amerli, in northern Iraq, where residents and fighters are celebrating the end of a two-month siege and the withdrawal of IS militants from around the town.
Gabriel Gatehouse reports.