It appears that several people are unaccounted for still -

news.sky.com/skynews/Home/World-News/Isr..._From_Gaza_Aid_Ships

Is this why reports, for days, did not confirm a death toll, often refering to "at least XXX dead" ?

The Israeli army is being criticised by the Foreign Press Association of Israel and the New York based Committee to Protect Journalists for selectively releasing the footage its forces took during the operation and the footage it confiscated from journalists and activists on board.

The FPA demanded Thursday that the military stop using the captured material without permission and identify the source of the video already released. The material appeared Wednesday on the army's YouTube site labeled as "captured.”

The FPA says the military is now selectively using footage to bolster its claims that commandos opened fire only after being attacked