A young boy filmed executing a man in an Isis propaganda video has been named as the son of Chatham terrorist Sally Jones.

The teenager has been identified by a man who says he is the boy's father.

The man, who has asked not to be named, split with Ms Jones shortly after his son was born.

She subsequently concerted to Islam, married an Isis supporter and fled to Syria.

The propaganda video released on Friday shows five boys murdering a group of captured Kurdish fighters.

The boys are seen pointing their handguns in the air before aiming them at the back of the heads of the captured hostages and firing.

Describing his son, the man told the Mail on Sunday: 'He was brilliant, just a normal boy – always chasing bugs, going down the park. I have had to block it out. It's been hard, we just have to carry on. It's disgusting he's been brainwashed."

A friend of the father told the paper: 'He was a happy boy, loving, caring, sensitive and a pleasure to be around. I'm angry at Sally for taking an innocent child who doesn't know right or wrong. Children can be easily manipulated.

"He's an innocent party and I want to know what makes a mother put her child in such a dangerous position."

Ms Jones, a former guitarist in an all-girl rock band, was named a 'specially designated global terrorist" by the US Government in 2015.