The UN says violence suffered by civilians in Iraq “remains staggering”, with at least 18,800 killed between January 1st, 2014 and October 31st, 2015.
Some 3.2 million people have also been displaced internally over the same period, according to a new report by the United Nations Assistance Mission for Iraq and the Office of the High Commissioner for Human Rights.
The UN accuses so-called Islamic State of systematic and widespread violence, including holding some 3,500 mainly women and children as slaves.
Alleged abuses by troops, militiamen and Kurdish forces were also recorded.
UN High Commissioner for Human Rights Zeid Raad Al Hussein said the report “starkly illustrates what Iraqi refugees are attempting to escape when they flee to Europe and other regions. This is the horror they face in their homelands”.