A man says security force members then , killed Ali as ISIS fighters approached . I do n't know . '' A woman says she found Ali 's body among many others at Tal Afar facility . Amnesty International alleges that government forces , Shiite militias executed Sunni detainees . Human Rights Watch finds mass graves thought to hold those killed by government fighters , their allies .
A man says security force members then , killed Ali as ISIS fighters approached . A woman says she found Ali 's body among many others at Tal Afar facility . Amnesty International alleges that government forces , Shiite militias executed Sunni detainees . Human Rights Watch finds mass graves thought to hold those killed by government fighters , their allies .