Prince Bandar's close ties to the Bush family prompted the nickname “Bandar Bush”. Bandar's children reportedly attended school with Cheney's grandchildren.
Saudi Arabia's spymaster Prince Bandar bin Sultan bin Abdulaziz has been injected with an incurable poison, a Lebanese media report says.
Some Lebanese media outlets quoted Saudi sources as saying that the prince was injected with an unknown kind of poison.
Bandar slipped into a coma and was rushed to Morocco and the United States for treatment, the report added.
Medical doctors say various methods of treatment have failed to restore him to health over the past few months, it noted.
The Saudi prince is known to have had close ties with former US President George W. Bush, and was an advocate of the US-led invasion of Iraq in 2003.
Bandar is also widely believed to be the key figure trying to increase Saudi weapons flow to the foreign-backed militants in Syria.
However, Washington had demanded the removal of Prince Bandar from the Syrian file owing to his mismanagement of the situation in the country, which has been grappling with a foreign-backed crisis since March 2011.
Several media reports confirmed that Bandar had been sacked.
Some unnamed Saudi security officials have recently said the prince would retake his position as intelligence chief and be in charge of dealing with Syria.
According to reports, the Western powers and their regional allies -- especially Qatar, Saudi Arabia and Turkey -- are supporting the militants operating inside Syria.
Over 160,000 people have reportedly been killed and millions displaced due to the Syria violence fueled by the foreign-backed militants.