My thoughts are with all those affected by this accident.
I agree with MWR. As I haven't seen photos of the scene, I wonder about the condition of the wreckage and the investigators' possibilities to find out the cause? Specifically the condition of the engines and the instrument panel, where presumably good clues (possible bird remains, gps memory etc) are most likely to be found. Hopefully the investigation can contribute to making aviation even safer in the future.