The Islamic State in Iraq and Syria's (ISIS) official magazine has carried a photo (above) of a soft drink can and what appeared to be a detonator and switch that it said were 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. Western governments have said the Airbus A321 operated by Metrojet was likely brought down by a bomb, and Moscow confirmed this on Tuesday.

Russian President Vladimir Putin has vowed to hunt down those responsible for the bombing and offered a US$50 million (S$71 million) reward for information leading to their arrest. Russia has also stepped up air strikes against ISIS targets in Syria. A still image taken from a video shows an oil facility, which Russia's Defence Ministry says is under the control of ISIS, being hit by air strikes carried out by Russia's air force at an unknown location in Syria.