The number of South Africans involved was revised to 28 from 25 after Dirco received further information from the SA ambassador to Egypt, Vusi Mavimbela.
On Monday, about 20 Durban parishioners returned home. The group, from the St Francis Xavier Catholic Parish and the Christ the King Roman Catholic Church on the Bluff and in Wentworth, were on the final leg of their pilgrimage tour to the pyramids in Egypt when the bomb exploded.
Father Mike Foley, from St Francis Xavier Catholic Parish, was among those injured.
A video which has been circulating on social media shows the victims in a state of shock after the blast. Some are seen with cuts and abrasions on their faces from the windows that shattered.