Lawyer for Luigi Mangione says dueling charges ‘highly unusual’

Luigi Mangione, the man accused of shooting UnitedHealthcare’s CEO, appeared Thursday in U.S. District Court in Manhattan, where his lawyer questioned conflicting federal charges she described as “highly unusual.” “Is there one case? Two cases? Two investigations? Is it a joint investigation,” Karen Friedman Agnifilo asked U.S. Magistrate Judge Katharine H. Parker.  “There are a lot of factors…