A bit more news...
Letter Prompts Evacuation
http://wbns10tv.com/Global/story.asp?S=3699770&nav=LUERd7Fl
The Franklin County Courthouse evacuated the 10th floor Tuesday morning after a letter surfaces with a return address of a person of the FBI watch list.
The letter, sent to Amy Salerno, was opened, and it was discovered to be a handwritten letter. It was then delivered to Salerno.
Investigators are treating the situation very seriously.
About the backpack, the man was apprehended on another bus and is being questioned by police. Apparently the backpack was glued shut (?) and the police are testing the contents.