About 3,500 slaves held by Islamic State in Iraq - U.N. report

GENEVA (Reuters) - An estimated 3,500 people, mainly women and children, are being held as slaves in Iraq by Islamic State militants, the United Nations said on Tuesday.

The Islamist group, which also controls large parts of Syria, is responsible for acts that may "amount to war crimes, crimes against humanity, and possibly genocide", particularly against minorities, a report said.