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.

"If you're reading this, you're no doubt asking yourself, 'Why did this have to happen?' " the message says. "The simple truth is that it is complicated and has been coming for a long time."

In the lengthy, rambling message, the writer rails against the government and, particularly, the IRS.[/quote]al 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.

"If you're reading this, you're no doubt asking yourself, 'Why did this have to happen?' " the message says. "The simple truth is that it is complicated and has been coming for a long time."

In the lengthy, rambling message, the writer rails against the government and, particularly, the IRS.