Article 6 of the constitution says the Royal Family Council has three days to choose a new sultan from the date the position falls vacant.If the Royal Family Council fails to agree, a letter containing a name penned by Sultan Qaboos should be opened in the presence of the Defence Council of military and security officials, supreme court chiefs, and heads of the upper and lower houses of the consultative assemblies.Using same-generation primogeniture, the successor to Qaboos would appear to be the children of his late uncle Sayyid Tariq bin Taimur, Oman's first prime minister and the Sultan's former father-in-law.[28][31] On 11 January 2020, Oman state TV said the Royal Family Council, in a letter to the Defense Council, had decided to defer to the choice that Qaboos named in his will, and thus had opened the letter by Qaboos naming his successor, announcing shortly that Haitham bin Tariq is the country's ruling sultan.[33][34] On 12 January 2021, the current Sultan, Haitham bin Tariq officially changed the Basic Law of the State, stipulating the creation of the post for the Crown Prince of Oman and appointed his first son, Theyazin bin Haitham as the apparent successor, making him the first Crown Prince of the Sultanate.