Islamic State fighters are using civilians trapped alongside them in the city of Mosul as human shields during airstrikes by coalition forces.

The group has also posted news of some of the destruction the city has sustained as the Mosul campaign enters its third day, even as it has denied anything other than “business as usual” in the city.

According to Reuters, ISIS fighters are preventing citizens from leaving the city, moving families to buildings they are using and installing fighters in the homes of others. Pentagon spokesman Capt. Jeff Davis told reporters the people in Mosul “are being held there against their will.”

The ISIS’ Amaq News Agency published early Wednesday a video allegedly showing the aftermath of U.S-led airstrikes on a kindergarten in Tal Afar, a city west of Mosul and near the Syrian border. It follows a video published on Tuesday purportedly showing the impact of an earlier strike south of Mosul, displaying the bodies of victims, the group said.

From a video published by Amaq early Tuesday

It is estimated that between 600,000 and 1 million people are currently in Mosul. The city was once home to nearly 2.5 million before it was taken over by ISIS in June 2014. According to the UN Refugee Agency the number of people displaced by war in Iraq has reached 3.3 million, or nearly one-tenth of the population. The agency plans to have set up 11 camps to shelter people fleeing Mosul in the coming weeks, with a capacity for 120,000 people.

Al-Jazeera reported that shelling on the city has intensified as Kurdish Peshmerga forces took control of crucial villages on the road to Mosul, some 12.5 miles from the outskirts of the city.