Father says blue-eyed British boy "killer" seen executing a captured prisoner in Syria is his son

After their split, Jones married an Islamic radical 25 years her junior, changed JoJo’s name to Hamza, and the three of them fled to Syria.

In the latest sickening nine-minute Islamic State video, the boy is called Abu Abdullah al-Britani. Al-Britani is a nom-de-guerre often used by terrorists from Britain.

The other children are captioned as being from Egypt, Kurdistan, Tunisia and Uzbekistan.

Wearing military fatigues and black bandanas, the boys point their handguns in the air before aiming them at the back of the heads of the captured hostages and firing.