Saudi Crown Prince Sultan bin Abdel Aziz Al Saud died Saturday, officials said. Sultan was the deputy minister of aviation and defense, and was one of the top figures in Saudi Arabia.

King Abdullah bin Abdel Aziz Al Saud mourns the death of his brother and his Crown Prince ... Prince Sultan bin Abdel Aziz Al Saud, a statement from the royal court said.

The statement said Sultan died outside the kingdom following an illness. However, it did not reveal details of his ailment.