25 children died due to hunger in ISIS-held Iraqi city of Mosul in January, with 140,000 others threatened, Iraqi right group says.

According to Iraqi Observatory for Human Rights, baby milk, supplementary nutrition of potable water have become scarce in western Mosul, making an increase in deaths caused by starvation.

The Iraqi rights group said 25 children, aged between one month and three years, died due to hunger in January, as the Iraqi forces struggle to drive ISIS out of the Mosul city.

Since the beginning of the operation against ISIS, the terrorist group has barred merchants from importing any foodstuff except for group members and their families.

This is while Iraqi government forces have recaptured eastern Mosul in January, after months of clashes with ISIS terrorists, but the fate of the western region is still up in the air.

The organization said there is not enough food for women to be able to breastfeed their infants.

Also on Tuesday, the office of the UN spokesperson said in western Mosul, " remote assessment indicates that some parts of the city receive safe drinking water for several hours every few days through the public network, but residents in southern and western areas of west Mosul city have no access to the public network, and are potentially using unsafe drinking water."