The stepfather of Chatham terrorist Sally Jones says it would be better if she was blown up, according to a national newspaper report.

Terry Lynch from Borough Green came forward following reports Sally's son Joe had been filmed executing a man in an Isis propaganda video.

Speaking to the Sun, Mr Lynch, 56, said he feared Joe's life had been ruined since he was taken to Syria by his mother when she joined terror group Isis in 2014.

And he said he had been horrified to see footage of his grandson wielding a gun.

“I couldn’t believe it, I feel so sad," he told the newspaper. "That is a wasted life. His life is ­finished.

"There is no way he can come back to the normal world. It’s terrible. Unbelievable. I feel really guilty because the boy used to say to me, ‘Grandad, can I stay with you?’"

He said the sooner she was blown up the better, describing her as a "nutter" and "selfish".

Last week Joe's father, who asked not be named, contacted the Mail on Sunday to say he believed the British boy shown in the Isis execution video was his son.

But the claims have also been denied on Twitter by a woman posing as Jones.

A series of messages were posted on Saturday by a Twitter account named "Mrs Terror", who wrote: "Its not my son.

“If it was my son in the video i would be very proud, and may Allah swt [glory to him, the exalted] reward all of them cubs of the khilafah [caliphate] aameen.

“By the way my son collects grenades now...not bugs Alhamdulillah for getting my beautiful boy to the Islamic State [all sic].”

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