Google translate:
According to several witnesses, quoted by the official, the aircraft flying in the mist emitted noise “of a device in difficulty” with “unusual hissing noise and a motor that is wrong,” said he said .
Lorsqu’il est sorti du brouillard, il a explosé en touchant le sol, dans un champ à l’écart des habitations, projetant des débris sur environ 300 mètres
My bold
If that’s correct, he must have gone in at high speed.