(CNN) More than 50 mass graves have been discovered throughout Iraq as it regains cities and villages from ISIS, a U.N. special representative for the country said. Three mass graves with bodies of about 40 people were found in April, he said. JUST WATCHED The children who escaped the clutches of ISIS Replay More Videos ... MUST WATCH The children who escaped the clutches of ISIS 03:47There have been previous reports of mass graves perpetrated by ISIS. He said the violent acts by ISIS -- killing, kidnapping, rape and torture -- constitute crimes against humanity, war crimes and even genocide. They were buried in an area around a football field in central Ramadi, he said.

Source: CNN May 07, 2016 04:37 UTC