As for Sevan, when news of the scandal first broke earlier this year, he took a long vacation to Australia.
He declined to answer questions when ABCNEWS found him last week staying at a luxury casino resort.
A U.N. spokesman says Sevan, who makes $186,000 a year, has submitted his retirement papers, effective May 21. The spokesman said Sevan would remain on full salary through the course of the U.N. investigation, which is expected to last at least three months.
Oil Contracts for Political Support
The inquiries into the United Nations Oil-for-Food program result from the release in January of a list of 270 individuals, companies and institutions that allegedly received lucrative oil contracts from Saddam Hussein's former regime in return for political support.
The list was published by an Iraqi independent newspaper which claimed the document was discovered in the files of the former Iraqi Oil Ministry in Baghdad.
Oil vouchers were allegedly given either as gifts or as payment for goods imported into Iraq in violation of the U.N. sanctions.
The following are the names of some of those listed as receiving Iraqi oil contracts (amounts are in millions of barrels of oil):
Russia The Companies of the Russian Communist Party: 137 million The Companies of the Liberal Democratic Party: 79.8 million The Russian Committee for Solidarity with Iraq: 6.5 million and 12.5 million (two separate contracts) Head of the Russian Presidential Cabinet: 90 million The Russian Orthodox Church: 5 million
France Charles Pasqua, former minister of interior: 12 million Trafigura (Patrick Maugein), businessman: 25 million Ibex: 47.2 million Bernard Merimee, former French ambassador to the United Nations: 3 million Michel Grimard, founder of the French-Iraqi Export Club: 17.1 million
Syria Firas Mostafa Tlass, son of Syria's defense minister: 6 million
Turkey Zeynel Abidin Erdem: more than 27 million Lotfy Doghan: more than 11 million
Megawati Sukarnoputri: 11 million
Spain Ali Ballout, Lebanese journalist: 8.8 million
Yugoslavia The Socialist Party: 22 million Kostunica's Party: 6 million
Canada Arthur Millholland, president and CEO of Oilexco: 9.5 million
Italy Father Benjamin, a French Catholic priest who arranged a meeting between the pope and Tariq Aziz: 4.5 million
Roberto Frimigoni: 24.5 million
Samir Vincent: 7 million Shakir Alkhalaji: 10.5 million
United Kingdom George Galloway, member of Parliament: 19 million Mujaheddin Khalq: 36.5 million
South Africa Tokyo Saxwale: 4 million
Jordan Shaker bin Zaid: 6.5 million The Jordanian Ministry of Energy: 5 million Fawaz Zureikat: 6 million
Toujan Al Faisal, former member of Parliament: 3 million
Lebanon The son of President Lahoud: 5.5 million
Egypt Khaled Abdel Nasser: 16.5 million Emad Al Galda, businessman and Parliament member: 14 million
Palestinian Territories The Palestinian Liberation Organization: 4 million Abu Al Abbas: 11.5 million
Qatar Hamad bin Ali Al Thany: 14 million
Libya Prime Minister Shukri Ghanem: 1 million
Chad Foreign minister of Chad: 3 million
Brazil The October 8th Movement: 4.5 million
The minister of the Forests of Myanmar: 5 million
Ukraine The Social Democratic Party: 8.5 million The Communist Party: 6 million The Socialist Party: 2 million The FTD oil company: 2 million