Having watched several photos on the media (live TV), I am shocked that several passengers walking away from the plane were carrying roller bags (which had to have been previously stowed in overhead bins), and large purses, and went down the slides with their bags (or did they toss their bags over ahead of sliding, still incorrect procedure?).
I wonder if casualties were exacerbated by delays in deplaning, which I assume delays had to have occurred in order to accomodate passengers carrying bags and large purses through the aisles and down the slides.
The investigation will need to carefully examine the behavior of the crew and their leadership and guidance to the passengers.