Saudi Attorney General Saud al-Mojeb said in a statement that 208 people had been called in for questioning since Saturday evening, and that seven people were released without charge, leaving 201 people still in detention.
"The potential scale of corrupt practices which have been uncovered is very large," he said, adding that based on investigations over the past three years, at least USD 100 billion has been misused through corruption and embezzlement over several decades.
Among those detained earlier are billionaire Saudi Prince Alwaleed bin Talal and two of the late King Abdullah's sons, including Prince Miteb who until Saturday had headed the powerful National Guard before he was ousted and detained.
The government, however, has declined to name the individuals being questioned, saying it is respecting their privacy during this phase of the process.
An estimated 1700 bank accounts have been frozen belonging to individuals. Al-Mojeb confirmed that action was taken to suspend personal bank accounts, but did not disclose any figures. The government has stressed that only personal banks have been frozen, leaving companies and businesses so far untouched.