Iraqi counter-terrorism units reported on July 15 that they had detained 20 female IS members captured in a secret tunnel discovered under the Old City neighborhood of Quleiat.
It took Iraq's USA -backed forces almost nine months to wrest Mosul from the Islamic State group, and the cost was enormous destruction, especially in the western part of the city.
The neighbourhood has witnessed sporadic clashes since last week, despite the official announcement of the "complete liberation" of the city.
Iraqi Prime Minister Haider al-Abadi declared victory over ISIL in Mosul on July 9th after Iraqi forces took over western Mosul's Old City, the birthplace of the ISIL where the group's leader, Abu Bakr al-Baghdadi, made a sermon proclaiming control over a third of Iraq and Syria.
"As the battle to retake west Mosul approached its conclusion this week, the IOM Iraq Displacement Tracking Matrix (DTM) reported an estimated 380,000 internally displaced persons (IDPs) - or over 63,000 families - newly recorded east of Mosul city", the press release said.
"We have another mission ahead of us, to create stability, to build and clear ISIS cells, and that requires an intelligence and security effort, and the unity which enabled us to fight ISIS", he said before raising an Iraqi flag.
"The women had weapons and explosive belts meant for attacking Iraqi troops" and included citizens of Germany, Russia, the Russian region of Chechnya, Turkey, Canada, Libya, and Syria, an official said.
Iraq is facing the challenge of returning residents to their homes in the war-torn city of Mosul.
Overall, the United Nations has estimated 10,000 buildings were ruined during the nine months of battling between USA -backed forces and ISIS militants, mostly in the Old City neighborhood.
Daesh stronghold in Syria's Raqqa is also close to falling.