Named as Abu Hafs al-Badri, the youthful teenager is claimed to be the cousin of Abu Bakr al-Bagdadhi, the extremist group's self-styled caliph.

Al-Badri's “martyrdom”! photo was released recently alongside fellow teenage suicide bomber Abu Yaqoub al-Iraqi.

The teenage duo carried out joint suicide missions in ISIS's latest offensive on the Baiji oil refinery in Salahuddin province, Iraq.

Another teenage suicide bomber Abu Basir al-Shami blew himself up in Anbar province, near the Iraqi city of Ramadi.

Another boy known as Abu Qaqa al-Shami, the Syrian national drove a truck laden with explosives into a checkpoint in northern Baghdad.

The last fanatic is the boy who has been named as Abu al-Hassan al-Shami, a Syrian fighter who appears to be no older than 14 years old.

In a photo series, entitled 'Battle of Vengeance for the Mother of the Believers (Aisha)', the youngster is thought to be one of two Syrian fighters, who carried out a suicide truck bombings in the Iraqi province of Salahuddin. 

ISIS have not just used local teenagers as suicide bombers in Iraq. Australian fighter Jake Bilardi, 18, from Melbourne, detonated a van filled with barrels of explosives near Iraqi armed forces in Ramadi.

The attack was reported as a rare failure and no one had been killed and just a few vehicles had been damaged by the attack.

Australian fighter Jake Bilardi, 18, from Melbourne, detonated a van filled with barrels of explosives near Iraqi armed forces in Ramadi last month.