Arizona authorities file formal charges against suspect Jared Loughner in the shooting rampage that targeted U.S. Rep. Gabrielle Giffords. The congresswoman is in critical condition, although doctors are upbeat about her prognosis. An earlier 'person of interest' had no involvement in the shootings, authorities say.Authorities on Sunday formally accused Jared Lee Loughner of murder and attempted murder of federal employees in connection with the Arizona shooting rampage that left six people dead and 14 injured, including the critically wounded U.S. Rep.