This sad story is made even more tragic with local media reports of evidence that the pilot may have taken his own life in this incident. He was a very well respected member of the local community and an experienced pilot (quoted as 5000 hours).
https://www.tdg.ch/derriere-le-crash...r-713350143048
I add this late news for the sake of completeness but see no point in giving more details. If anyone wants me to summarise the press report I can do so, perhaps via PM.
Laurence