Yemen's former president Ali Abdullah Saleh reportedly amassed assets worth 30-62 billion dollars during and after his time in office, a United Nations report said.
The report was prepared by a panel of experts who monitor UN sanctions on Yemen and said that Saleh is believed to have transferred most of the wealth abroad under other names, reported the BBC.
It said that the origin of the funds used to generate Saleh's wealth is believed to be "partly from his corrupt practices as president of Yemen, particularly relating to gas and oil contracts."
The report said that Saleh's assets included, property, cash, shares, gold and other valuable commodities spread across at least 20 countries.
Yemen is the poorest country in the Middle East.
It is embroiled in a political turmoil and Saleh is believed to be playing a key role behind the scenes.
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He has denied allegations of corruption in the past.
Saleh served as Yemen's President for 33 years before being ousted in one of the 2011 Arab uprisings.