Iraqi special forces are aiming to recapture the city taken by militants in 2014.
Lieutenant General Talib Shaghat said the cooperation of residents was helping the advance against ISIS.
Heavy fighting in Mosul during renewed U.S.-backed offensive against militants.
Most Christians had to flee their homes to avoid death at the Islamic State's hands.
ISIS producing weapons on a scale and sophistication which matches national military forces.
Despite military defeats, ISIS will retain its attractiveness to would-be jihadis, a report says.
A coalition of Iraqi forces is continuing its fight to oust the group from the northern city.
Iraqi troops offensive to retake the city has been hampered by Islamic State counter attacks.
Searches are underway to establish the whereabouts of the troops.
Civilians escaping from ISIS-held territory in northern Iraq find that justice is not always forthcoming.
Iranian-backed Shi'ite paramilitaries have linked with Kurdish forces west of the city.
The attacks included 19 uses of hazardous materials on the battlefield around Mosul.
The numbers of those fleeing has increased as Iraqi forces edge further into the city.
UN says civilians are being targeted in the battle to retake ISIS's stronghold in Iraq.
Human Rights Watch has cited witness accounts of the prisoner massacre.
Iraqi authorities must take new measures to ensure thousands of vulnerable families are cared for.
Troops recapture town of Nimrud, 20 miles south of Mosul.
Many desperate citizens have no where to turn, as camps fill up and provisions are in short supply.
Men dressed as Iraqi police allegedly carried out revenge attacks against civilians, rights group says.