Cleaning crews face questions over cause of EgyptAir crash
As French authorities question airport staff who had access to EgyptAir Flight 804, cleaning crews are among those drawing attention.
One theory is that a bomb could have been placed in the plane while it was on the tarmac in Paris, or at its previous stops in Cairo or Tunis, although there is no evidence so far of a bomb being aboard the flight that crashed on Thursday into the Mediterranean while flying from Paris to Cairo.
