All I'll say is that after these threats have occurred for some time now, I'm surprised they haven't nailed any of the perpetrators. Do you really think its a mentally unstable patient/former patient from Western Psych? Those kinds of people make mistakes and leave trails-that doesn't seem to be the case here.
In spite of what you see on CSI, tracking down someone or someones isn’t as easy as they make it look on TV. You have had threats written on bathroom walls... emailed.. sent to the newspapers.. and press... its not like the guys calling up Pitt every time, the threats are being delivered in various forms to various people.
The reality is, this is either a lone nut, with an axe to grind against Pitt for some reason, or a student or just someone desperate for attention or someone else started it and copycats are coming out of the woodwork, etc etc etc.. At this point whoever it is, if they have opened their mouth to anyone and are a pitt student, they will wind up busted hard, because at this point they have made nearly everyone at pitt faculty and staff inconvienced to the hilt. So if anyone knows who it is, they will be squealed on. Fact that hasn’t happened yet, leads me to believe its either multiple someones copycating, and or a lone nut just desperate for attention.
Point Park, another university in town got a bomb threat yesterday as well, pointing toward the copycats/lone nut desperate for attention theory.