Could it be Uyghur related terrorism against China?
They've tried it in the past (actually 2 years ago) -
https://en.wikipedia.org/wiki/Tianji...es_Flight_7554
And the recent 29 stabbing deaths at a Chinese train station was Uyghur related.
This would make sense if the large Chinese population onboard and the plane's destination were a factor. Or it could be a smokescreen by someone for some other purpose.
The uptick in Uyghur terrorism in the past few years should raise some questions though, in relation to this incident.
You heard it here first!