Cairo - The question of what caused EgyptAir Flight 804 to crash in the Mediterranean, killing all 66 on board, remains shrouded in confusion, speculation and conflicting statements. Here is a look at what is known so far and what questions remain unanswered.

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EXPLOSION OR NOT?

One of the primary questions is whether or not the plane was brought down by a bomb or some sort of mechanical failure. On Tuesday, two different Egyptian officials publicly disagreed on whether or not the available evidence indicated an on-board explosion. A senior Egyptian forensics official told The Associated Press that the condition of the human remains collected from the crash site so far indicated an explosion. Later however, the head of Egypt’s forensic agency dismissed such talk, calling it “baseless.”... Read More: VIN