In his message which was released on Saturday, Bahram Qasemi sympathized with Vietnamese government, people and bereaved families of the victims of the heinous and blind attack.
According to Arab media, terrorists detonated a bomb while a bus carrying Vietnamese tourists was moving about in the Egyptian Pyramids district on Friday.
In a statement published in its Facebook page, the Egyptian Interior Ministry announced that terrorists had planted an improvised bomb by a wall in a street in Giza Province.
The bus was carrying 14 Vietnamese tourists, the statement added.