person. no doubt about it, anderson. he's nuts. disturbing classes. he's doing all kinds of crazy things. no way along the way do we see a violent streak there or threats being made. the sheriff's department just now released a statement saying we have not had any prior knowledge to any threats made to the congresswoman or government official or any member of the public. so they are kind of clarifying there were no threats. so what was the trigger and what was the obsession on congresswoman giffords? >> and randi, talking to people in the neighborhood as have you all day, did they have any insight into that? >> reporter: anderson, the neighbors are really confused. they're shocked, they're sad, they're grieving for the victims, they're grieving for the family. they certainly did see a change in jared loughner over the last few months. he went from longer hair, to shorter hair, to cropped hair, and recently shaved his head. he started wearing more and more black. he always walked around with headphones on. one neighbor steven woods told