The Paris-based Voltaire Network confirmed the death of 63-year-old Prince Bandar on its website on Monday, citing unofficial sources.
The international non-profit organization, which publishes a free website (voltairenet.org) in eight languages, said that Prince Bandar was killed because of his role in the July 18 deadly bombing in Damascus.
The bombing killed at least four high-profile Syrian security officials, including Defense Minister Dawoud Rajiha and his deputy Assef Shawkat who was also President Bashar al-Assad's brother-in-law.
Bandar, who was Saudi Arabia’s ambassador to the United States from 1983 to 2005, was named the kingdom’s Secretary General of the National Security Council in 2005. On 19 July 2012, he was appointed Director General of the Saudi Intelligence Agency by King Abdullah.