ISIS’ official magazine carried a photo on Wednesday of a Schweppes soft drink can it said was used to make an improvised bomb that brought down a Russian airliner over Egypt’s Sinai Peninsula last month, killing all 224 people on board.

The photo showed a can of Schweppes Gold soft drink and what appeared to be a detonator and switch on a blue background, three simple components that if genuine are likely to cause concern for airline safety officials worldwide.

“The divided Crusaders of the East and West thought themselves safe in their jets as they cowardly bombarded the Muslims of the Caliphate,” the English language Dabiq magazine said in reference to Russia and the West. “And so revenge was exacted upon those who felt safe in the cockpits.”

Western governments have said the Airbus A321 operated by Metrojet was likely brought down by a bomb and Moscow confirmed on Tuesday it had reached the same conclusion, but the Egyptian government said it has still not found evidence of criminal action.

Explosives experts said it was feasible the device shown in the photo could bring down a plane, depending on where it was located and the density of explosives in the soft drink can. The most vulnerable locations include the fuel line, the cockpit or anywhere close to the fuselage skin.

The apparent similarities, the detonator and switch suggested the soda can device was on a timer, rather than operated by a suicide bomber, suggested a similar chain of events on the Russian airliner, some experts said.

However, Clive Williams, a professor at the Australian National University’s Centre for Military and Security Law and a member of the International Association of Bomb Technicians and Investigators, said the use of a soda can raised questions about whether the device was included in the catering supply.

State Department spokesman John Kirby said on Wednesday the U.S. government was not in a position to confirm “the veracity” of the magazine’s claim.

Alexander Bortnikov, the head of Russia’s FSB security service, said traces of foreign-made explosive had been found on fragments of the downed plane and on passengers’ personal belongings. He said the bomb probably contained around 1 kilogram (2.2 pounds) of TNT.