Former U.S. Attorney Donald W. Washington, who served his last day in office Monday, has joined the law firm of Jones, Walker, Waechter, Poitevent, Carrère & Denègre.

Washington will practice from the firm’s Lafayette office, according to a release issued by the firm Tuesday.

Washington will focus on complex civil litigation, federal and state criminal investigations, regulatory enforcement actions and internal investigations and compliance programs in such industries as health care, maritime and energy, the release stated.

President George W. Bush appointed Washington to serve as U.S. Attorney for the Western District of Louisiana in September 2001.

Washington announced his resignation Jan. 7. First assistant U.S. Attorney William J. Flanagan is serving as acting U.S. Attorney until a replacement is named.