Russian mafia
He alerted the FBI to a US$7 billion money laundering network during the late 1990s involving the Bank of New York, Russian banks including Depozitarno-Kliringovy Bank and the Russian mafia which resulted in both Peter Berlin and his wife Lucy Edwards, a former vice president of the Bank of New York, confessing to money laundering for Semion Mogilevich and the Russian mafia of more than $7 billion between 1996 and 1999.