As one of the longest-serving leaders of the U.S. Justice Department’s Criminal Division, Lanny Breuer has overseen some of the highest-profile cases in the country’s history. On March 1, after nearly four years at the helm, Breuer is planning to leave his post.

Breuer, the assistant attorney general of the Criminal Division, said in an interview on Jan. 29 that he hasn’t yet settled on his next steps. Talk of Breuer’s departure from one of DOJ’s most coveted slots has been ongoing in Washington legal circles for a couple of months now.