A man walking his dog has found a black bag holding ammunition that authorities believe was discarded by a gunman accused of trying to assassinate an Arizona congresswoman.

Chief Rick Kastigar with the Pima County Sheriff’s Office told The Associated Press that an 18-year-old found the bag Thursday morning in a neighborhood near where the suspect lives. He went to get another man, who looked inside and saw ammunition.

Authorities have said the suspect, Jared Loughner, and his father got into a confrontation over the bag at their home in the hours before the shooting.

President and CEO of Nassau University Medical Center Thomas Stokes explains the problems caused by the aging infrastructure within the hospital. Newsday Associate Editor Joye Brown reports.  Credit: Newsday/Kendall Rodriguez

Inside look at NUMC's aging infrastructure President and CEO of Nassau University Medical Center Thomas Stokes explains the problems caused by the aging infrastructure within the hospital. Newsday Associate Editor Joye Brown reports.

President and CEO of Nassau University Medical Center Thomas Stokes explains the problems caused by the aging infrastructure within the hospital. Newsday Associate Editor Joye Brown reports.  Credit: Newsday/Kendall Rodriguez

Inside look at NUMC's aging infrastructure President and CEO of Nassau University Medical Center Thomas Stokes explains the problems caused by the aging infrastructure within the hospital. Newsday Associate Editor Joye Brown reports.

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