From Fides:
About 30 young people, belonging to an organization of civilian volunteers, mostly Muslims, cleaned and tidied the Chaldean church dedicated to the Virgin Mary, in Drakziliya, in Mosul on the left bank of the Tigris River and now under the control of the Iraqi army. The church had been confiscated and chosen as the logistic base by the militiamen of ISIS, but in the period of jihadist occupation apparently it suffered only minor damage, contrary to the false information given in recent years, which spoke of the total destruction of the Christian place of worship by means of explosives. Young volunteers – as shown by the photos published by ankawa.com web site – removed the debris scattered in the church and cleaned the floor and tried to eliminate writings, banners and murals that the ISIS militants scattered in public places.
You can see more images here.