From the gist of it, his dad was an Islamic radical terrorist involved in the bombing of embassies in the late 90s, as a Lieutenant for Osama Bin Laden's Al Qaeda group, and was taken into custody years later after his involvement was discovered. He had a rapper career but quit to follow in his father's footsteps and disappeared sometime in 2012. He is one of 400 to 500 British nationals believed who have joined ISIS. Earlier this year, he was discovered to have posted a picture of himself from Syria holding a severed head with the caption "Chillin with my homie or what's left of him".
His name is Abdel-Majed Abdel Bary, and he's 24 years old.