Iraqi government-run camps struggled on Sunday to shelter people fleeing Fallujah, as the military battled Islamic State militants in the city’s northern districts.

Prime Minister Haider al-Abadi declared victory over the jihadists on Friday after troops reached the city center, following a four-week U.S.-backed assault.

But shooting, suicide bombs and mortar attacks continue.

More than 82,000 civilians have evacuated Fallujah, an hour’s drive west of Baghdad, since the campaign began and up to 25,000 more are likely on the move, the United Nations said.