On Thursday morning, Austin resident Joseph Stack burned down his home, drove to his local airport, then flew a small plane he owned into an office building that housed an IRS office there. Two people were taken to the hospital and 11 more were injured. Two bodies were pulled from the buildings, but their identities have not been confirmed. A Web site registered to Stack contained a suicide note, in which Stack rants against the government and the IRS. "If you’re reading this, you’re no doubt asking yourself, 'Why did this have to happen?,'" he wrote. "The simple truth is that it is complicated and has been coming for a long time." He ends, "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." Though investigations are ongoing, authorities initially said that the crash was not linked to any terrorist group and called it an "isolated incident." Before driving to the airport, Stack set fire to his home.