Austin plane crash was deliberate, officials say

An Austin, Texas, resident with an apparent grudge against the Internal Revenue Service set his house on fire Thursday and then crashed a small plane into a building housing an IRS office with nearly 200 employees, federal officials said.
Federal authorities identified the pilot of the Piper Cherokee PA-28 as Joseph Andrew Stack, 53.
Two people were injured and one person was missing, local officials said. There were no reported deaths.
A message on a Web site registered to Stack appears to be a suicide note.

http://i2.cdn.turner.com/cnn/2010/images/02/18/stack.letter.pdf

Source : http://www.cnn.com/2010/US/02/18/texas.plane.crash/index.html (CNN USA)