King Abdullah's successor to the Saudi Arabian throne, Crown Prince Naif, died on Saturday. The 78-year-old prince was named as next in line to the throne in October 2011.
The Saudi Gazette reported the Saudi Royal Court issued a statement announcing the death:
"With deep sorrow and grief, the Custodian of the Two Holy Mosques, King Abdullah Bin Abdulaziz Al Saud, announced the death of his brother, Crown Prince Naif Bin Abdulaziz Al Saud, Deputy Premier and Minister of Interior, who passed away on Saturday.
A funeral prayer will be performed for his soul at the Holy Mosque in Makkah after Maghreb (sunset) prayer on Sunday.
The Royal Court condoles the Saudi people on the deceased prince, praying to Allah Almighty to bless his soul and to reward him for his services to his religion and homeland."
According to Saudi state television the Prince died in Geneva, where he had been undergoing medical tests since May.
Considered less of a reformist than King Abdullah, Prince Naif held deeply conservative values. The BBC reported Prince Naif was appointed to his first government role when he was just 18. After serving as governor of Riyadh, Prince Naif held the position of Minister of the Interior for 35 years.
Prince Salman, the younger brother of Prince Naif at 76, is expected to be announced as his successor as next-in-line to the throne.