Buchanan Ingersoll & Rooney has just been hit with the second malpractice suit in three years stemming from work handled by former Washington partner Louis Diamond. A jury in the first suit held the firm and Diamond jointly liable for nearly $860,000. The latest suit, filed two weeks ago by the name partners of a lobbying shop in Washington, is asking for more than twice that.

When asked about the latter case, Buchanan’s general counsel, John Leathers, said, “All I can do at this point is investigate the allegations in the complaint because Mr. Diamond is no longer with the firm.” Diamond hasn’t been with Buchanan since 2007.