The revelations came ahead of a high-profile visit to the United States by Crown Prince Mohammed bin Salman, who orchestrated the crackdown in early November as he consolidates his grip on power.
Trouble is brewing for billionaires in Saudi Arabia.
The newspaper interviewed relatives, advisers, associates of the detainees, as well as Saudi officials, who denied the allegations.
In light of the anti-corruption campaign led by Crown Prince Mohammed bin Salman, it is simply impossible to assess the net worths of the richest men in that country. Gen. Ali al-Qahtani, an officer in the Saudi National Guard, was found to have his neck twisted unnaturally and his body bruised and badly swollen.
The Prime Minister said the visit of Imam-e-Ka'aba would further strengthen the existing close and brotherly ties between the people of the two countries.
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Now, nearly two months after the purge officially came to an end, The New York Times has released a report, echoing claims made by the MEE in November. The official added that the detainees had "full access" to legal counsel and medical care. The kingdom said it seized billions in various types of assets including real estate, commercial entities and cash.
The announcement comes as a New York Times report has suggested that numerous assets of the 381 princes, ministers and tycoons have yet to be seized while more than a dozen of the detainees were abused while they were held.
Saudi Public Prosecutor Sheikh Saud al-Moajab said the new anti-corruption prosecutorial units were created "within the framework of King Salman's keenness to combat corruption in all its forms", and will be supported with a conference of local and foreign experts in April focusing on "the protection of integrity and fighting corruption in privatization programs".
Several dozen others, whose names have not been disclosed, remain in custody in a prison outside of the capital and may stand trial, although the allegations against them have not been made public. The general was pronounced dead at a military hospital.
The kingdom has never publicly provided an explanation of the general's death.