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A woman who claims the young boy featured in so-called Islamic State's latest propaganda film is her grandson has said the situation is "devastating".
Victoria Dare told the BBC'sThe One Show that she recognised the boy - thought to be aged under five - by his eyelashes and mouth.
She told the programme she had not seen her grandson or daughter since 2012.
"I am not taking it as he is my grandson to be in that situation," she said. "That is the way I can deal with the situation.
"That joy is taken away from me which is very devastating. I need my grandchildren, my daughter, I need them back."
Labour has said there are "serious questions" to be answered over how a British man was able to flee to Syria while on bail before reportedly appearing in an IS propaganda video.
Siddhartha Dhar travelled to Syria in 2014 while on bail after being arrested on suspicion of encouraging terrorism.
There have been reports he is the masked man in so-called Islamic State's latest propaganda killings video, although the Home Secretary declined to comment on his identity in the House of Commons on Tuesday.
Shadow Home Secretary Andy Burnham said whether or not Dhar is the man in the video, there had been "a major lapse in security" and called for an inquiry into how he was able to leave the country.
Theresa May said she could not comment on an "ongoing police investigation".
David Cameron has described the latest Islamic State killings video, which features a British-sounding man and young boy, as "desperate stuff" from a group that is "losing territory" and "increasingly losing anybody's sympathy".
A spokesperson for the Prime Minister earlier said the released footage should be dismissed as propaganda.
The Foreign Office is examining the video which shows the apparently British militants along with the killing of five men accused of spying for the UK.
Mr Cameron was individually cited as an "imbecile" during the video by the gun-wielding jihadi with an English-sounding accent who condemned the RAF bombing campaign against IS in Iraq and Syria.
"We are examining the content of the video and the Prime Minister is being kept updated on that," his spokesperson said.
"It serves as a reminder of the barbarity of (Islamic State) and what the world faces with these terrorists. It is also clearly a propaganda tool and should be treated as such."
Latest ITV News reports
Despite multiple claims to the contrary, the man behind the mask in the latest IS propaganda video has not yet been identified.
A leading candidate emerges in the push to name the 'Brit' from the latest IS killings video - but his sister and mentor say it isn't him.