The Islamic State recording showing two Japanese men held hostage by militants may have been filmed in separate locations before being combined into a single video, experts claim. Inconsistencies with the shadows of Haruna Yukawa, fellow captive Kenji Goto and the masked killer known as Jihadi John suggest images of the hostages were recorded separately and then added together for greater effect. Other tell-tale signs include the jumpsuits worn by the two men - they are slightly different shades of orange and don't flutter in the wind at the same time. Scroll down for video Shadows on the hostages (circled) lie in inconsistent directions, suggesting they may have been filmed in two separate locations with different light sources and the footage then combined
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Experts suggest latest ISIS video has been doctored by the militants
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Shadows indicate the two hostages were filmed at separate locations
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The extremists may have then combined the footage for greater effect
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Kenji Goto appeared in the latest ISIS  video alongside Haruna Yukawa
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Mr Goto's mother has begged for her son's captors to release him safely
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The two men have been threatened with death unless Japan pays ransom
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A 72-hour deadline given for the $200million payment has now passed
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ISIS militants have now warned the 'countdown has begun' for the pair
An @placeholder posting appeared online today showing a clock counting down to zero along with gruesome images of other hostages who have been beheaded by ISIS.