Duffy also presided over the trial and conviction of the four principal perpetrators of the 1993 World Trade Center bombing. In a book about the trial, "Defending Mohammad: Justice on Trial," Robert E. Precht, a defense attorney for Mohammad Salameh (who rented the yellow Ryder van that carried the explosives), accused Duffy of bias and of "essentially convicting his client before the trial ended." Other defense lawyers have applauded the Judge's fair handling of the case and after the trial, the New York Post ran a headline calling him the "Avenger."