Andrew Mountbatten-Windsor received millions of pounds from an oligarch using funds from a firm implicated in criminal corruption, a BBC investigation has found.
Kazakh billionaire Timur Kulibayev has told the BBC through his lawyers that he used a loan from a company called Enviro Pacific Investments to help him buy Andrew's former mansion.
Prosecutors in Italy concluded that the firm had received cash from a bribery scheme in 2007.
Weeks after the last of these payments was made, the oligarch bought Sunninghill Park in Berkshire from the then prince for £15m - with the help of funds from Enviro Pacific.
Kulibayev is the son-in-law of Kazakhstan's then-president and was one of the most influential officials in the central Asian country's oil and gas industry. The BBC has also learned that, in another case, an Italian businessman pleaded guilty to bribing the oligarch.
