A week before Eli Lilly disclosed to regulators that the U.S. Justice Department was investigating its New Jersey factory, the drugmaker told employees that its own inquiry, led by an outside law firm, found no evidence of wrongdoing there, according to a company memo reviewed by Reuters. On April 8, a group of employees filed an anonymous complaint internally alleging that an executive at its Branchburg, New Jersey, factory had altered documents required by the U.S. Food and Drug Administration. As Reuters reported last month, Lilly tapped the Washington D.C. law firm Covington & Burling LLP to investigate the alleged alterations, which the employees said were meant to downplay serious quality control problems at the plant producing the drugmaker's COVID-19 antibody treatment.