A mass grave with remains of forty Christians was found in Mosul, church sources declared on Thursday.
"Al-Hashd al-Shaabi (Popular Mobilization Forces) along with security troops in Halila region, near Badush in west of Mosul, ran into a mass grave of Christians who were kidnapped from the region," a source from the Syriac Orthodox Church told Alghad Press website.
"Most of the human remains were buried collectively. Some of them were for women and children. They had small Christian crosses with them," the source added.
Security troops ran into tens of mass graves at regions recaptured from IS. More than 70 graves, including Yazidis killed by IS, were also found.
Violence in the country has surged further with the emergence of Islamic State Sunni extremist militants who proclaimed an "Islamic Caliphate" in Iraq and Syria.
Thousands of IS militants as well as Iraqi civilians were killed since the government campaign, backed by paramilitary troops and the coalition, was launched in October 2016 to fight the militant group.
Iraqi Prime Minister Haidar al-Abadi declared in July victory over IS militants who had held the second largest Iraqi city since 2014. More than 25,000 Islamic State militants were killed throughout the campaign. Abadi announced, in December, full liberation of Iraqi lands, declaring end of war against IS members.