Erbil, Iraq - The head of a hospital in Erbil that has been treating injured Iraqis from Mosul has told Al Jazeera that he is sure they are the victims of a chemical attack.

Twelve people, including women and children, are being treated for severe symptoms, including burns and breathing difficulties.

The United Nations is demanding an investigation into whether chemical weapons have been used as US-backed Iraqi forces fight ISIL for control of western Mosul.

Middle East, Iraq, Health