this is just like the rvac bar,
extend the small information you have heard into the worlds major aviation problem.
i new both of the deceased.
the best report i know is 'engine failure after takeoff'
no comment any further than that.
oh, perhaps,
if you don't know what happened, don't speculate here and destroy the credibility of the deceased by your lack of knowledge of their credentials or the reason for their demise.
take in all the news reports and don't accept the eyewitness reports as gospel, commonly they are not accurate.
there are not only their loved ones and family greiving this accident.
safe travels