Iraqi military investigators say they have discovered two mass graves near a former Islamic State group prison near Mosul containing the bodies of 500 IS victims.
The Media Cell Security Investigation team said in a statement Friday that one grave near the Badoush Prison site contained the bodies of 470 prisoners killed by IS. It said a second grave contained 30 victims.
A security official who spoke on condition of anonymity says most of the victims are believed to be Shiite Muslims or other minorities. The Islamic State group is a Sunni extremist group.
A massacre at Badoush Prison in June 2014 left 600 male inmates dead. A patch of scraped earth and tire tracks show the likely killing site, according to exclusive photos obtained by the imagery intelligence firm AllSource Analysis.