Video posted by CNN shows the plane crash-landing, exploding into a fireball and plumes of black smoke. Here’s what to know about the devastating accident and the latest on the possible causes. Passengers on the Azerbaijan Airlines’ Embraer operated ...

Questions were being asked Thursday about the cause of an airliner crash in Kazakhstan the day before, as Azerbaijan held a day of mourning for the dozens of victims of the disaster. The reasons that Azerbaijan Airlines flight J2-8243 came down are still unknown.

We will never forget the beloved people we lost in the crash of the Embraer 190 aircraft,” said Azerbaijan Airlines in a statement posted online on Boxing Day. The pro-government AnewZ news station cited Azerbaijan officials as saying shrapnel from a Russian missile was responsible.