Is this the bomb that brought down a jetliner?

“This will remain with us forever”, Putin stated.

Islamic State also published a photo of what it said were passports belonging to dead Russians ” obtained by the mujahideen”.

Russia’s FSB security agency director Alexander Bortnikov announced yesterday that a homemade explosive device had blown apart the aircraft, which crashed in the Sinai Peninsula shortly after taking off from Sharm el Sheikh global Airport.

“A bomb was smuggled onto the airplane”, it said.

An aeroplane with 161 people aboard made an emergency landing in the Black Sea city of Burgas on Thursday, following a bomb threat while en route to Egypt from Poland’s capital of Warsaw, Bulgarian authorities said. “We will find them in any spot on the planet and punish them”, he said.

But in a worrying message, the group said it only switched its target to Russian Federation following its decision to launch airstrikes in Syria and had been planning to target a member of the Western coalition.

Egypt said on Tuesday that it would consider the Russian findings on the plane crash, but an Egypt-led probe team has yet determined the cause.

Egypt is battling an Islamist insurgency in the Sinai, a strategic peninsula bordering Israel, Gaza and the Suez Canal.

An attack of such magnitude against tourists as the plane bombing would signal a shift in tactics.

If they are unable to leave the building, NATSCO suggests people hide from gunfire behind “substantial brickwork or heavy reinforced walls” because “cover from view does not mean [they] are safe – bullets go through glass, brick, wood and metal”. The target was changed to a Russian plane at the last minute.

China’s Foreign Ministry said the nation is “deeply shocked”.

“Attacking one of Assad’s primary backers helps improve the group’s domestic image” against accusations that it is not fighting the regime, he said.

Russian Federation said explosives weighing up to 1 kilogram, a little more than 2 pounds, brought down Metrojet 9268, which means ISIS’ claim it used a bomb the size of a soda can is plausible. All passengers and crew were evacuated, but no explosives have been found aboard, a spokeswoman for the Burgas airport told Reuters, adding that the airport remains closed.