Pima County Sheriff Clarence Dupnik, who only identified the shooter as a 22-year-old white male, said the evidence online and information they've received from two schools that Loughner attended led him to believe the gunman was \"unstable.\"

\"There's reason to believe that this individual may have a mental issue,\" Dupnik told reporters today. \"I'm not a psychiatrist so I have no reason to believe the person was insane. Was he unstable? I would agree with that.\"

\"Follow

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