Saudi Arabia’s King Salman bin Abdulaziz al-Saud has issued a series of decrees that have led to high profile ministers and princes being sacked and arrested.

The king has sacked the Minister of the National Guard Prince Mutaib bin Abdullah bin Abdulaziz al-Saud as part of a government reshuffle, and has launched an anti-corruption drive that has reportedly led to the arrest of 11 princes including Kingdom Holding chief Prince Alwaleed bin Talal.

The decision to remove Prince Mutaib as head of the National Guard had been widely expected. He was once considered a strong contender for the Saudi throne and was the last of late King Abdullah bin Abdulaziz al-Saud’s sons to hold a prominent government position.

Prince Khalid bin Abdulaziz bin Mohammed bin Ayyaf al-Muqren has been appointed as the new minister.

The king also made two other government changes. Minister of Economy and Planning Adel Fakeih was replaced by his deputy, Mohammad al-Tuwaijri, and Admiral Abdullah al-Sultan was sacked as commander of Saudi Naval Forces and replaced by Admiral Fahd bin Abdullah al-Ghifaili.

The king also formed a supreme committee chaired by Crown Prince Mohamed bin Salman bin Abdulaziz al-Saud to combat corruption. After the announcement, the Al-Arabiya news channel reported that 11 princes, four sitting ministers and tens of former ministers have been detained as part of the anti-corruption drive.

Various reports have said that those arrested include Prince al-Waleed bin Talal, the head of Kingdom Holding, and Finance Minister Ibrahim al-Assaf.