Sami al-Aridi

At first sight the picture appears to show a mother cradling her young child as she flees an Islamic State-held area of Mosul.

But a closer look reveals she is holding a trigger, which she will pull seconds later.

Some 300 Islamic State of Iraq and the Levant fighters remain in the small patch of territory still controlled by the group in Mosul's Old City, a senior Iraqi commander said on July 5.