What happened to the Egypt Air flight?

Yesterday, an Airbus from Egypt Air left Paris with destination Cairo. It never arrived. Now the Egyptians claim they've found parts of the plane and also luggage of its passengers, even a body part.

The airbus has supposedly crashed in the neigborhood of Alexandria, but as long as the black boxes have been found, nobody knows what really happened.

A terrorist attack? France and Egypt are "crusader countries" for ISIS. (Just as Belgium...) Or is it another German Wings scenario?

If a bomb has been planted in the plane while at Charles de Gaulle airport, this would mean serious trouble for the French security services. And poses question as how safe the European Championship Soccer will be...