A single-engine plane crashed into a seven-story office building that housed both IRS and FBI offices on Thursday, causing a massive fire that left thirteen people injured, two of whom were hospitalized, according to The New York Times. Federal and local officials are calling the event a criminal act.
The pilot was identified by authorities as Joseph A. Stack III. A recent publication on Stack's Website, signed in his name, denotes much animosity toward the federal government, especially the tax system and lack of health care. Authorship has not yet been confirmed as Stack's, though federal officials are still investigating.
But it is this quote that keyed officials in to the author's violent intentions:
"I saw it written once that the definition of insanity is repeating the same process over and over and expecting the outcome to suddenly be different," the note concluded. "I am finally ready to stop this insanity. Well, Mr. Big Brother IRS man, let's try something different; take my pound of flesh and sleep well."
The web post was signed "Joe Stack (1956-2010)."
Federal officials say that the incident is not linked to an organization or a greater plot. Though as a precaution, the North American Aerospace Defense Command sent two F-16 fighter jets as a part of antiterrorism protocol.
Also Thursday morning, in an event that has not yet been confirmed to be connected to the crash, NPR reported that Stack's home caught fire, causing Stack's wife and daughter to seek safety at a neighbors house.
Stack reportedly had tax problems. Both local and federal officials continue to investigate the incident.