Here’s another source.
(Could not post as thread due to copyright rules.)
the most disturbing thing is that they stopped responding to communication
like malaysian 370 too
They must copy from each other. One interesting tidbit was that there was a chase aircraft that may have had visual contact.
Both articles get the cruising altitude wrong, but if the plane crashed at 0948, it must have leveled off at a lower altitude after a rapid controlled descent.