Islamic State militants have published a photo which they claim shows the improvised bomb that brought down a Russian passenger jet in Egypt.
The veracity of the image, which was published by Islamic State’s propaganda magazine Dabiq, could not be immediately verified.
It shows a soft drink can and what appears to be a detonator and switch on a blue background.
The Metrojet plane crashed in Egypt’s Sinai Peninsula last month, killing all 224 people on board.
Russia has confirmed that the plane was brought down by a bomb, and offered a £33m reward for information leading to the arrest of the perpetrators.
Sky’s foreign affairs editor Sam Kiley said at first glance the IS image does appear to show a detonator.
He said: “But that means it would have to have been triggered by a live person and the bomb was in the hold.
“And it would have shown up even on an Egyptian scanner if it was carried by a passenger.
“There is no timer or altitude switch, which is what would have been needed.”
Michael Yardley, a weapons specialist and a historian of terrorism, told Sky News: “This could be a deception, however, looking at the picture that’s been published what I see is a crude but credible device.
Read more: Sky News