Nigeria's anti-corruption agency said Sunday it has recovered about 630,000 dollars raised during a dinner organised in Lagos in aid of US presidential hopeful Barack Obama.

The Economic and Financial Crimes Commission said "it has taken custody of the funds realised from the controversial Africa for Obama dinner/concert" staged in Nigeria's commercial capital.

It pledged to "soon work out modalities on how to share the money among those who paid to participate in the event".

Last month the commission questioned Ndi Okereke-Onyiuke, chief executive of the Nigerian Stock Exchange, over the gala dinner.

She denied fund-raising for Obama, saying the dinner was "designed to sensitise and mobilise Africans worldwide and other eligible US citizens to register and vote instead of passively watching history being made".

The commission -- which told Okereke-Onyuike "to steer clear of such activities in future" -- said its investigations had nevertheless exonerated her, and that she had broken no Nigerian laws.

Nigeria ranks 147 in Transparency International's corruption perceptions index for 2007.