(Bloomberg) -- George Canellos and Andrew Ceresney have been named co-directors of enforcement at the Securities and Exchange Commission, the agency said Monday.

Canellos has been acting director since January following the departure of Robert Khuzami, who held the post for the previous four years. Ceresney, a former prosecutor, has been a partner at law firm Debevoise & Plimpton LLP in New York.

The two men will lead the enforcement unit as it shifts from investigations tied to the 2008 credit crisis toward areas such as high-frequency trading and accounting fraud. Canellos, 48, and Ceresney, 41, both previously worked as federal prosecutors for SEC Chairman Mary Jo White when she was U.S. Attorney for the Southern District of New York.

“George and Andrew will be a formidable team and I am grateful to both of them for taking on this extremely important responsibility,” White said in a statement.