Alex Oh, the former Paul, Weiss, Rifkind, Wharton & Garrison partner tapped to serve as the next enforcement chief at the U.S. Securities and Exchange Commission, has abruptly left the role days into the job, after a federal judge this week raised questions about conduct in litigation she handled while in private practice.

A statement issued Wednesday by the SEC said Oh is departing from the agency for “personal reasons,” but doesn’t provide further details. Melissa Hodgman, who previously served as the acting enforcement chief, will step back into the role. SEC Chair Gary Gensler thanked Oh “for her willingness to serve the country at this important time.”