A funeral mass for the slain daughters of King Farouk-era Wafd MP Tawfik Pasha Andraus will be held on Tuesday at Al-Sayeda Al-Adhraa church in Luxor in Upper Egypt.

The two women, 79-year-old Laudy Andraus and 82-year-old Sofi Andraus, were killed at their historic palace in Luxor on Monday by unknown assailants.

The reason for the killings remains unknown. Security sources said that the palace's main gate had been broken.

The Andraus daughters will be buried at their family's graveyard, near Al-Karnak district.

While the prosecutors continue investigating the crime, the head of the Wafd Party El-Sayed El-Badawi has commissioned a legal committee headed by Abdel-Sand Yamama, a member of the party's supreme body, to follow the investigations.

El-Badawi further vowed in a press statement on Monday that the Wafd will not let the crime pass without the perpetrators being punished.