Two Italians and a Russian are now known to have died in Thursday's bomb blast at Egypt's Hilton hotel in Taba.
Part of the Hilton hotel collapsed after the blast
Sisters Jessica and Sabrina Rinaudo - aged 19 and 22 - had been identified by DNA tests, Italian officials said.
Moscow earlier confirmed the death of one Russian woman and said nine other Russians who reportedly stayed in the hotel on the Red Sea were missing.
At least 32 people - mostly Israelis and Egyptians - died in the Taba blast and two smaller explosions in Nuweiba.
Israel suspects al-Qaeda involvement in the blast that injured more than 100.
Israeli rescue workers on Sunday ended their search for bodies in the rubble of the hotel.
The parents of the two young Italian sisters visited the site of the powerful blast, after flying to Taba on an Italian government aircraft.
They placed a basket of pink and white flowers at the edge of a dusty hole to the basement shopping concourse. The sisters' father, Luigi, cried as he looked over the scene.
Meanwhile, a Russian diplomat in Cairo said on Sunday that "the search for evidence on the fate of nine Russian citizens" continued, according to the Interfax news agency.
The diplomat said the Russian Embassy was acting in co-operation with the local authorities.
Russia said earlier that several of its nationals were injured in the Taba blast.