His lawyers have denied that the change of heart indicated a deal with the Singapore authorities.
Singapore authorities conducted the first raid on 9 December 2001, arresting six people.
Citibank told Singapore authorities that the confirmation was a fake, the complaint said.
Singapore authorities are concerned the birds could spread illnesses from the carrion and waste they eat.
He remains wanted by the Singapore authorities.
Singapore authorities quarantined 305 Motorola workers last week when a single worker fell ill on the night shift in one of its factories.
Singapore authorities have denied that the police abused Mr. Fay.
Singapore authorities first encountered his name in 1987, when he was arrested at Heathrow Airport for possessing drugs.
The Singapore authorities filed papers with a German court last week seeking his extradition and laying out the preliminary case against him.
The DLM was banned by Singapore authorities in the late 1980s.