Edson,
So sorry to hear you were indeed so closely involved with this awful event. Unbelievable sudden sadness...?
The initial news report here indicated hydroplaning was the culprit. The new runway wasn't sawcut to limit this (as many around the world aren't), and it was 700' shorter than the 7,000' considered minimum for the aircraft type (as many around the world are also). They showed (on our PBS) evidence the pilot tried to steering the plane into the grass without success (I understand many airports provide concrete crash bunkers to slow the plane quickly and contain the damage...supposedly saving the passengers as well).
Unfortunately we won't hear anymore about this unless there is more awful news, so please keep us posted on what develops if you can.
My best, Tom.