Saudi Arabia has arrested dozens of senior figures including princes, ministers and a top business tycoon, with authorities today pledging fair justice after a sweeping purge seen as consolidating the crown prince's hold on power. <br/><br/>A government source told news agency AFP, immediately after a new anti-corruption commission headed by Crown Prince Mohammed bin Salman was established by royal decree that prominent billionaire Al-Waleed bin Talal was among the princes arrested late Saturday.<br/><br/>Separately, the head of the Saudi National Guard, once a leading contender to the throne, as well as the navy chief and the economy minister were replaced in a series of high-profile sackings that sent shock waves through the kingdom.<br/><br/>The dramatic shake-up comes at a time of unprecedented social and economic transformation in ultra-conservative Saudi Arabia, as Prince Mohammed steps up his reform drive for a post-oil era.<br/><br/>Saudi-owned Al Arabiya television reported that 11 princes, four current ministers and dozens of ex-ministers were arrested as the commission launched a probe into old cases such as floods that devastated the Red Sea city of Jeddah in 2009.<br/><br/>The suspects are being granted the same rights and treatment as any other Saudi citizen, attorney general Sheikh Saud al-Mojeb said in a statement, adding that a number of investigations had been initiated.