By Jody Godoy and Chris Prentice

NEW YORK/WASHINGTON (Reuters) – Long-time U.S. Department of Justice official Daniel Kahn, who oversaw high-profile bribery cases against French energy company Alstom (PA:) SA and Brazilian construction conglomerate Odebrecht SA, is leaving government for the private sector, a source told Reuters.

Kahn will join white-shoe defense firm Davis Polk & Wardwell, said the source, who was familiar with the move.

Kahn and Davis Polk spokespeople did not immediately respond to queries for comment.

Although Kenneth Polite was confirmed by the U.S. Senate to head the Justice Department’s criminal division, Polite has not yet made permanent selections to the section’s fraud division, which is responsible for the agency’s prosecution of executives and corporations.

Last year, the fraud section secured $2.9 billion in U.S. criminal penalties and payments, and settled several high-profile cases including a market manipulation probe against JPMorgan Chase & Co (NYSE:) and foreign bribery charges against Goldman Sachs Group Inc (NYSE:) for its role in Malaysia’s 1MDB corruption scandal. As part of these settlements, the companies admitted to wrongdoing.

Kahn was the acting assistant attorney general for the criminal section. He also led the appellate and fraud sections of the criminal Division. Prior to that, Kahn held various leadership positions within the criminal division, including three years as the head of the foreign bribery team. After spending six years working at Davis Polk in the same capacity, he was recruited to join the Justice Department.

After six years at Davis Polk, he joined the Justice Department in 2010. He was convicted of corporate crimes and received record fines.