Iraqi forces push to clear last pockets of IS in Mosul

Iraqi forces fought to eliminate the last pockets of Islamic State group resistance in Mosul today after the premier visited the devastated city to congratulate troops on securing victory.

With the jihadists surrounded in a sliver of territory in Mosul's Old City, attention was turning to the huge task of rebuilding the city and of helping civilians, with aid groups warning that Iraq's humanitarian crisis was far from over.

The Old City in particular has been devastated, with many buildings reduced to little more than concrete shells and rubble littering the streets.

Upon his arrival in the city, Abadi's office said he was visiting "liberated" Mosul to congratulate troops on a "major victory".

Abadi later said that while "victory is certain", he was holding off on making a formal declaration "out of my respect and appreciation for our... forces that are continuing the clearing operation."

A senior commander said on Monday that Iraqi forces were engaged in "heavy" fighting with the remnants of jihadist forces, but that the battle was near its end.

Lieutenant General Sami al-Aridhi of the elite CounterTerrorism Service said the jihadists had been reduced to an area of the Old City of about 200 by 100 metres (yards).

"They do not accept to surrender," Aridhi told AFP.

But "operations are in their final stages," and "it is likely that (the fighting) will end today", Aridhi said.

Aridhi said his forces had information that there were between 3,000 and 4,000 civilians in the area but that could not be independently confirmed.

Backed by the US-led coalition battling IS, Iraqi forces launched their campaign in October to retake Mosul, which was seized by the jihadists during the mid-2014 offensive that saw them take control of large parts of Iraq and neighbouring Syria.

Army, police and special forces, backed by waves of USled air strikes, seized the eastern side of the city in January and launched the battle for its western part the next month.

The fight grew tougher when security forces entered the densely populated Old City on the western bank of the Tigris River, which divides the city, and intense street-to-street fighting followed.

The cost of victory has been enormous: much of Mosul in ruins, thousands dead and wounded and nearly half the city's population forced from their homes.

The United Nations has said 920,000 people fled their homes during the Mosul operation, and while some have returned the vast majority remain displaced.

"It's a relief to know that the military campaign in Mosul is ending. The fighting may be over, but the humanitarian crisis is not," Lise Grande, the UN's humanitarian coordinator in Iraq, said in a statement.

The UN refugee agency (UNHCR) on Monday said it could be many months before civilians are able to return to their homes.

"It is likely that thousands of people may have to remain in displacement for months to come," UNHCR said in a statement.

"Many have nothing to go back to due to extensive damage caused during the conflict, while key basic services such as water, electricity and other key infrastructure, including schools and hospitals, will need to be rebuilt or repaired," it said.